The cardiovascular system consists of the heart and blood vessels. The heart has four chambers - two upper atria and two lower ventricles separated by valves. It is supplied by coronary arteries and has an intrinsic conduction system to generate electrical signals to coordinate contractions. During each cardiac cycle, the atria contract followed by ventricular contraction and relaxation in two phases - systole and diastole. The cycle involves filling of chambers, contraction and ejection of blood from the heart into vessels.
The heart has four chambers and uses a conduction system to coordinate contractions. It pumps deoxygenated blood to the lungs and oxygenated blood to the rest of the body in a double circulatory system. The heart is regulated intrinsically through factors like preload and afterload, and extrinsically through nervous and chemical mechanisms like baroreceptor and chemoreceptor reflexes. Aging causes the heart to decrease in function over time due to hypertrophy, stiffening tissues, and increased risk of conditions like arrhythmias and coronary artery disease.
This document provides an overview of the anatomy and physiology of the heart. It begins by describing the location of the heart in the mediastinum and its layers, including the pericardium, myocardium, and endocardium. It then discusses the internal structures of the heart, including the atria, ventricles, chambers, and valves. It explains the cardiac conduction system and heart sounds. Finally, it covers topics like cardiac output, stroke volume, and the factors that regulate stroke volume.
The cardiovascular system includes the heart and blood vessels. The heart has four chambers and pumps blood through the body. It is surrounded by layers including the epicardium, myocardium, and endocardium. The heart has valves that allow blood to flow in only one direction. During fetal development, shunts allow blood to bypass the lungs and liver. The cardiovascular system transports blood through arteries, arterioles, capillaries, venules and veins. It is regulated by the conduction system and heart sounds occur during the cardiac cycle.
Muscular System: The Cardiac Muscle (Heart)hm alumia
Cardiac muscle is only found in the heart. It contracts involuntarily and has abundant mitochondria to power its contractions. Cardiac muscle cells are connected through intercalated discs that allow electrical signals to spread through the heart.
The heart has four chambers - two upper atria that receive blood and two lower ventricles that pump blood out. The right side receives deoxygenated blood and pumps it to the lungs, while the left side receives oxygenated blood and pumps it into the body. Valves ensure blood flows only in one direction through the heart's chambers and vessels.
The cardiovascular system includes the heart and blood vessels, and functions to circulate blood throughout the body. The heart has four chambers - two atria which receive blood, and two ventricles which pump blood out of the heart. The heart is surrounded by layers including the endocardium, myocardium, and epicardium. It is regulated by an intrinsic conduction system including the sinoatrial node which initiates heartbeats. Deoxygenated blood enters the heart and is pumped to the lungs, where it receives oxygen and is then pumped through arteries throughout the body by the heart before returning to it through veins to repeat the cycle.
The document provides information about the anatomy and physiology of the human heart. It discusses the following key points:
1. The heart is a hollow, muscular organ located in the chest cavity that pumps blood through two circulatory loops - pulmonary circulation to the lungs and systemic circulation to the rest of the body.
2. The heart has four chambers - left and right atria receive blood, and left and right ventricles pump blood out. Valves ensure blood flows in one direction.
3. The heart's rhythm is electrically controlled by a conduction system originating in the sinoatrial node, which generates electrical signals causing coordinated heart muscle contraction and pumping of blood.
The heart is a cone-shaped organ located in the chest cavity between the lungs. It is surrounded by fluid-filled sac called the pericardium. The heart has four chambers - two upper atria that receive blood and two lower ventricles that pump blood out. Blood flows through valves from the atria to ventricles and then out arteries or pulmonary artery. The heart's wall has three layers - outer epicardium, middle muscular myocardium, and inner endocardium. The heart continuously contracts and relaxes in a cardiac cycle of diastole and systole to pump blood through the body.
Location and orientation with the thorax
Structure of the heart
Structure of the Heart Wall
Chambers of the Heart
Valves of the Heart
Pathway of blood through the heart
Cardiac Muscle Tissue
Conducting System and Innervation
Four Steps of Cardiac Conduction
Blood Supply to the Heart
The heart has four chambers and uses a conduction system to coordinate contractions. It pumps deoxygenated blood to the lungs and oxygenated blood to the rest of the body in a double circulatory system. The heart is regulated intrinsically through factors like preload and afterload, and extrinsically through nervous and chemical mechanisms like baroreceptor and chemoreceptor reflexes. Aging causes the heart to decrease in function over time due to hypertrophy, stiffening tissues, and increased risk of conditions like arrhythmias and coronary artery disease.
This document provides an overview of the anatomy and physiology of the heart. It begins by describing the location of the heart in the mediastinum and its layers, including the pericardium, myocardium, and endocardium. It then discusses the internal structures of the heart, including the atria, ventricles, chambers, and valves. It explains the cardiac conduction system and heart sounds. Finally, it covers topics like cardiac output, stroke volume, and the factors that regulate stroke volume.
The cardiovascular system includes the heart and blood vessels. The heart has four chambers and pumps blood through the body. It is surrounded by layers including the epicardium, myocardium, and endocardium. The heart has valves that allow blood to flow in only one direction. During fetal development, shunts allow blood to bypass the lungs and liver. The cardiovascular system transports blood through arteries, arterioles, capillaries, venules and veins. It is regulated by the conduction system and heart sounds occur during the cardiac cycle.
Muscular System: The Cardiac Muscle (Heart)hm alumia
Cardiac muscle is only found in the heart. It contracts involuntarily and has abundant mitochondria to power its contractions. Cardiac muscle cells are connected through intercalated discs that allow electrical signals to spread through the heart.
The heart has four chambers - two upper atria that receive blood and two lower ventricles that pump blood out. The right side receives deoxygenated blood and pumps it to the lungs, while the left side receives oxygenated blood and pumps it into the body. Valves ensure blood flows only in one direction through the heart's chambers and vessels.
The cardiovascular system includes the heart and blood vessels, and functions to circulate blood throughout the body. The heart has four chambers - two atria which receive blood, and two ventricles which pump blood out of the heart. The heart is surrounded by layers including the endocardium, myocardium, and epicardium. It is regulated by an intrinsic conduction system including the sinoatrial node which initiates heartbeats. Deoxygenated blood enters the heart and is pumped to the lungs, where it receives oxygen and is then pumped through arteries throughout the body by the heart before returning to it through veins to repeat the cycle.
The document provides information about the anatomy and physiology of the human heart. It discusses the following key points:
1. The heart is a hollow, muscular organ located in the chest cavity that pumps blood through two circulatory loops - pulmonary circulation to the lungs and systemic circulation to the rest of the body.
2. The heart has four chambers - left and right atria receive blood, and left and right ventricles pump blood out. Valves ensure blood flows in one direction.
3. The heart's rhythm is electrically controlled by a conduction system originating in the sinoatrial node, which generates electrical signals causing coordinated heart muscle contraction and pumping of blood.
The heart is a cone-shaped organ located in the chest cavity between the lungs. It is surrounded by fluid-filled sac called the pericardium. The heart has four chambers - two upper atria that receive blood and two lower ventricles that pump blood out. Blood flows through valves from the atria to ventricles and then out arteries or pulmonary artery. The heart's wall has three layers - outer epicardium, middle muscular myocardium, and inner endocardium. The heart continuously contracts and relaxes in a cardiac cycle of diastole and systole to pump blood through the body.
Location and orientation with the thorax
Structure of the heart
Structure of the Heart Wall
Chambers of the Heart
Valves of the Heart
Pathway of blood through the heart
Cardiac Muscle Tissue
Conducting System and Innervation
Four Steps of Cardiac Conduction
Blood Supply to the Heart
The cardiovascular system consists of the heart and blood vessels. The heart has four chambers and pumps blood through two circuits. Blood is pumped from the left ventricle through the aorta to the body in systemic circulation and from the right ventricle to the lungs in pulmonary circulation. The heart receives oxygenated blood through the coronary arteries. It has its own electrical conduction system to regulate rhythm. The heart pumps blood through arteries, arterioles, capillaries, venules and veins to supply oxygen and nutrients throughout the body. Blood pressure is regulated by baroreceptors and chemoreceptors that detect changes and signal the brain.
The heart is a hollow muscular organ responsible for pumping blood through the circulatory system. It has four chambers: right atrium, right ventricle, left atrium, and left ventricle. The heart is surrounded by membranes and has three layers - epicardium, myocardium, and endocardium. It is located in the chest cavity and pumps oxygenated blood received from the lungs through the left side of the heart to the entire body. The heart has four valves that prevent backflow of blood - tricuspid valve, pulmonary valve, mitral valve, and aortic valve.
The document provides information on the anatomy and physiology of the human heart. It discusses the heart's location in the thoracic cavity, its structure which includes three layers (pericardium, myocardium, and endocardium), and its four chambers. It describes the flow of blood through the heart via the superior vena cava, inferior vena cava, pulmonary arteries, and aorta. It also covers the heart's conductive system, including the sinoatrial node, atrioventricular node, and Purkinje fibers. Finally, it briefly discusses cardiac output, blood pressure regulation, and the pulmonary and systemic circulations.
The document provides information on the anatomy and physiology of the human heart. It discusses the heart's location in the thoracic cavity, its internal and external structures, the layers of the heart wall, the heart chambers and valves, coronary blood supply, cardiac cycle and conduction system, heart sounds, electrocardiography, and cardiac output. The heart is described as a hollow muscular organ that pumps blood through the circulatory system through coordinated electrical conduction and mechanical contraction and relaxation of its chambers.
Anatomy of heart dr nikunj shekhada (mbbs,ms gen surg ,dnb cts SR) 11 6-18DR NIKUNJ SHEKHADA
The document provides an overview of the anatomy of the heart. It describes the heart as a hollow muscular organ located in the middle mediastinum behind the sternum. The heart has four chambers - two atria which receive blood and two ventricles which pump blood out. It notes the positions of structures like the cardiac apex. It then describes in detail the layers of the heart wall, the structure of the atria and ventricles, surrounding tissues like the pericardium, valves, blood vessels including the coronary arteries and veins, and the electrical conduction system.
The circulatory system consists of the heart and blood vessels. The heart has four chambers and uses valves to pump blood through two circuits. Deoxygenated blood enters the right side of the heart and is pumped to the lungs, where it releases carbon dioxide and picks up oxygen before returning to the left side of heart to be pumped throughout the body. Blood flows through arteries, capillaries where gas exchange occurs, and veins, and is propelled by blood pressure generated with each heartbeat.
The heart has four chambers - right and left atria receive blood returning from the body and lungs respectively, and pump it to the right and left ventricles which pump blood to the lungs and body. It is located in the mediastinum and surrounded by membranes. The heart wall has three layers - epicardium, myocardium and endocardium. The sinoatrial node initiates electrical impulses which travel through pathways to coordinate contractions. Deoxygenated blood enters the right atrium and is pumped to the lungs, then returns oxygenated to the left atrium to be pumped through the body by the left ventricle.
The document discusses the cardiovascular system and heart. It describes how the cardiovascular system transports blood throughout the body using the heart as a pump. It then provides details on the structure and layers of the heart, how it functions as a double pump with two circuits (pulmonary and systemic), and the roles of the heart valves and chambers. It also discusses heart physiology including the conduction system that regulates heartbeat, conditions like tachycardia and fibrillation, and the purpose of pacemakers.
The document describes the anatomy and physiology of the heart. It discusses the location of the heart in the thorax, its coverings including the pericardium, and internal layers. It describes the major vessels that supply and drain blood from the heart. It details the conduction system that coordinates heart contractions, the cardiac cycle, and factors regulating cardiac output. It also discusses congenital heart defects and conditions like congestive heart failure.
The heart has four chambers. The two superior receiving chambers are the atria (= entry halls or chambers), and the two inferior pumping chambers are the ventricles (= little bellies).
On the anterior surface of each atrium is a wrinkled pouchlike structure called an auricle
The document provides information on the cardiovascular system and heart anatomy. It discusses the heart chambers, which include the right and left atria and ventricles. It also describes the major blood vessels associated with the heart and the pathway of blood flow from the heart to the lungs and throughout the body. Additionally, it covers the layers of the heart wall, heart valves that prevent backflow of blood, and the conducting system which coordinates heart contractions.
The cardiovascular system includes the heart and blood vessels. The heart pumps blood into vessels that circulate it throughout the body to supply nutrients and oxygen and remove waste. The heart has four chambers - the right and left atria receive blood, and the right and left ventricles pump it out. Valves ensure blood flows in only one direction. The conduction system initiates and coordinates heart contractions. Cardiovascular disorders disrupt blood flow and heart function, while vessel disorders involve blockages or damage.
The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.
INTRODUCTION TO CVS PHYSIOLOGY-BSCN.pptxJamesMwaura15
This document provides an introduction to cardiovascular physiology, including the components and function of the circulatory system. It describes the anatomy of the heart, including the four chambers, valves, and circulation through the heart. It also discusses the coronary circulation which provides oxygenated blood to the heart muscle itself. In summary, it introduces the key structures and functions of the cardiovascular system, with a focus on the anatomy and blood flow through the heart.
This document provides an overview of the cardiovascular system and human heart. It begins with definitions and functions of the cardiovascular system. It then describes the internal and external structure of the heart, including the four chambers, valves, blood vessels, and conducting system. Key concepts covered include the cardiac cycle, blood pressure, electrocardiogram, coronary and systemic circulation. Common heart conditions such as coronary artery disease, heart attack, arrhythmias and valve disease are also summarized.
The document discusses the structure and function of the human heart. It describes how the heart is made up of four chambers - two atria and two ventricles separated by valves. The cardiac cycle involves coordinated contractions of the atria and ventricles along with opening and closing of valves to ensure one-way blood flow. The heart rate is controlled by a natural pacemaker and nerves from the brain that can increase or decrease the rate.
circulation.pdf for students to study an educate themselvesackeemb419
This document provides an overview of the cardiovascular system, including:
- The objectives are to describe heart structures and functions, different types of circulation, diseases and treatments, and care devices.
- Key terms related to the heart anatomy are defined.
- The heart is enclosed in membranes and composed of three layers. It has four chambers separated by valves that control blood flow.
- Blood vessels include arteries, veins, and capillaries that transport blood and exchange materials. The conduction system coordinates heart contractions.
The document outlines an evacuation plan for Group 3. It discusses community plans, hospital plans, and unit plans. The hospital disaster committee is responsible for developing the hospital evacuation plan. The plan provides guidelines for internal and external disasters. It also outlines four types of emergency plans: evacuation plans, relocation plans, isolation plans, and reception plans. The evacuation plan states who is responsible to command the evacuation and the procedures and routes to safely evacuate patients in emergencies like floods, fires, or toxic fumes.
School is an institution designed to provide learning spaces and environments for teaching students under the direction of teachers. It falls under secondary socialization. Schools have different levels including pre-school, primary school, secondary school, and tertiary. Schools have both manifest, or intended, functions and latent, or unintended, functions. The manifest function is to convey norms, beliefs, and values through formal education, while latent functions include students discovering new values and attitudes from teachers and developing intellectually, physically, culturally, and emotionally. The overall conclusion is that schools aim to assist families in developing well-integrated, socialized children who will become responsible adults in society.
The cardiovascular system consists of the heart and blood vessels. The heart has four chambers and pumps blood through two circuits. Blood is pumped from the left ventricle through the aorta to the body in systemic circulation and from the right ventricle to the lungs in pulmonary circulation. The heart receives oxygenated blood through the coronary arteries. It has its own electrical conduction system to regulate rhythm. The heart pumps blood through arteries, arterioles, capillaries, venules and veins to supply oxygen and nutrients throughout the body. Blood pressure is regulated by baroreceptors and chemoreceptors that detect changes and signal the brain.
The heart is a hollow muscular organ responsible for pumping blood through the circulatory system. It has four chambers: right atrium, right ventricle, left atrium, and left ventricle. The heart is surrounded by membranes and has three layers - epicardium, myocardium, and endocardium. It is located in the chest cavity and pumps oxygenated blood received from the lungs through the left side of the heart to the entire body. The heart has four valves that prevent backflow of blood - tricuspid valve, pulmonary valve, mitral valve, and aortic valve.
The document provides information on the anatomy and physiology of the human heart. It discusses the heart's location in the thoracic cavity, its structure which includes three layers (pericardium, myocardium, and endocardium), and its four chambers. It describes the flow of blood through the heart via the superior vena cava, inferior vena cava, pulmonary arteries, and aorta. It also covers the heart's conductive system, including the sinoatrial node, atrioventricular node, and Purkinje fibers. Finally, it briefly discusses cardiac output, blood pressure regulation, and the pulmonary and systemic circulations.
The document provides information on the anatomy and physiology of the human heart. It discusses the heart's location in the thoracic cavity, its internal and external structures, the layers of the heart wall, the heart chambers and valves, coronary blood supply, cardiac cycle and conduction system, heart sounds, electrocardiography, and cardiac output. The heart is described as a hollow muscular organ that pumps blood through the circulatory system through coordinated electrical conduction and mechanical contraction and relaxation of its chambers.
Anatomy of heart dr nikunj shekhada (mbbs,ms gen surg ,dnb cts SR) 11 6-18DR NIKUNJ SHEKHADA
The document provides an overview of the anatomy of the heart. It describes the heart as a hollow muscular organ located in the middle mediastinum behind the sternum. The heart has four chambers - two atria which receive blood and two ventricles which pump blood out. It notes the positions of structures like the cardiac apex. It then describes in detail the layers of the heart wall, the structure of the atria and ventricles, surrounding tissues like the pericardium, valves, blood vessels including the coronary arteries and veins, and the electrical conduction system.
The circulatory system consists of the heart and blood vessels. The heart has four chambers and uses valves to pump blood through two circuits. Deoxygenated blood enters the right side of the heart and is pumped to the lungs, where it releases carbon dioxide and picks up oxygen before returning to the left side of heart to be pumped throughout the body. Blood flows through arteries, capillaries where gas exchange occurs, and veins, and is propelled by blood pressure generated with each heartbeat.
The heart has four chambers - right and left atria receive blood returning from the body and lungs respectively, and pump it to the right and left ventricles which pump blood to the lungs and body. It is located in the mediastinum and surrounded by membranes. The heart wall has three layers - epicardium, myocardium and endocardium. The sinoatrial node initiates electrical impulses which travel through pathways to coordinate contractions. Deoxygenated blood enters the right atrium and is pumped to the lungs, then returns oxygenated to the left atrium to be pumped through the body by the left ventricle.
The document discusses the cardiovascular system and heart. It describes how the cardiovascular system transports blood throughout the body using the heart as a pump. It then provides details on the structure and layers of the heart, how it functions as a double pump with two circuits (pulmonary and systemic), and the roles of the heart valves and chambers. It also discusses heart physiology including the conduction system that regulates heartbeat, conditions like tachycardia and fibrillation, and the purpose of pacemakers.
The document describes the anatomy and physiology of the heart. It discusses the location of the heart in the thorax, its coverings including the pericardium, and internal layers. It describes the major vessels that supply and drain blood from the heart. It details the conduction system that coordinates heart contractions, the cardiac cycle, and factors regulating cardiac output. It also discusses congenital heart defects and conditions like congestive heart failure.
The heart has four chambers. The two superior receiving chambers are the atria (= entry halls or chambers), and the two inferior pumping chambers are the ventricles (= little bellies).
On the anterior surface of each atrium is a wrinkled pouchlike structure called an auricle
The document provides information on the cardiovascular system and heart anatomy. It discusses the heart chambers, which include the right and left atria and ventricles. It also describes the major blood vessels associated with the heart and the pathway of blood flow from the heart to the lungs and throughout the body. Additionally, it covers the layers of the heart wall, heart valves that prevent backflow of blood, and the conducting system which coordinates heart contractions.
The cardiovascular system includes the heart and blood vessels. The heart pumps blood into vessels that circulate it throughout the body to supply nutrients and oxygen and remove waste. The heart has four chambers - the right and left atria receive blood, and the right and left ventricles pump it out. Valves ensure blood flows in only one direction. The conduction system initiates and coordinates heart contractions. Cardiovascular disorders disrupt blood flow and heart function, while vessel disorders involve blockages or damage.
The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.
INTRODUCTION TO CVS PHYSIOLOGY-BSCN.pptxJamesMwaura15
This document provides an introduction to cardiovascular physiology, including the components and function of the circulatory system. It describes the anatomy of the heart, including the four chambers, valves, and circulation through the heart. It also discusses the coronary circulation which provides oxygenated blood to the heart muscle itself. In summary, it introduces the key structures and functions of the cardiovascular system, with a focus on the anatomy and blood flow through the heart.
This document provides an overview of the cardiovascular system and human heart. It begins with definitions and functions of the cardiovascular system. It then describes the internal and external structure of the heart, including the four chambers, valves, blood vessels, and conducting system. Key concepts covered include the cardiac cycle, blood pressure, electrocardiogram, coronary and systemic circulation. Common heart conditions such as coronary artery disease, heart attack, arrhythmias and valve disease are also summarized.
The document discusses the structure and function of the human heart. It describes how the heart is made up of four chambers - two atria and two ventricles separated by valves. The cardiac cycle involves coordinated contractions of the atria and ventricles along with opening and closing of valves to ensure one-way blood flow. The heart rate is controlled by a natural pacemaker and nerves from the brain that can increase or decrease the rate.
circulation.pdf for students to study an educate themselvesackeemb419
This document provides an overview of the cardiovascular system, including:
- The objectives are to describe heart structures and functions, different types of circulation, diseases and treatments, and care devices.
- Key terms related to the heart anatomy are defined.
- The heart is enclosed in membranes and composed of three layers. It has four chambers separated by valves that control blood flow.
- Blood vessels include arteries, veins, and capillaries that transport blood and exchange materials. The conduction system coordinates heart contractions.
The document outlines an evacuation plan for Group 3. It discusses community plans, hospital plans, and unit plans. The hospital disaster committee is responsible for developing the hospital evacuation plan. The plan provides guidelines for internal and external disasters. It also outlines four types of emergency plans: evacuation plans, relocation plans, isolation plans, and reception plans. The evacuation plan states who is responsible to command the evacuation and the procedures and routes to safely evacuate patients in emergencies like floods, fires, or toxic fumes.
School is an institution designed to provide learning spaces and environments for teaching students under the direction of teachers. It falls under secondary socialization. Schools have different levels including pre-school, primary school, secondary school, and tertiary. Schools have both manifest, or intended, functions and latent, or unintended, functions. The manifest function is to convey norms, beliefs, and values through formal education, while latent functions include students discovering new values and attitudes from teachers and developing intellectually, physically, culturally, and emotionally. The overall conclusion is that schools aim to assist families in developing well-integrated, socialized children who will become responsible adults in society.
This document defines and describes the principle of autonomy in nursing practice. Autonomy refers to self-governance and respecting an individual's thoughts and actions without coercion, as long as they do not infringe on others' freedom. In nursing, autonomy means respecting patients' values and choices in care. The document also discusses ethical dilemmas as situations where moral principles conflict, such as allocating limited healthcare resources between critical patients. Examples of ethical dilemmas in nursing include treatment refusal due to cultural beliefs and not informing patients of their conditions.
Therapeutic diets are meal plans that control intake of certain foods or nutrients, especially for patients with digestive, kidney, or metabolic issues. Therapeutic diets modify energy, protein, carbohydrate, fat, iron, calcium, salt, vitamins, and fluid intake based on a patient's condition. Examples include high protein diets for liver conditions; low carbohydrate diets for diabetes; low purine diets for gout; high calcium diets for rickets; and sodium restriction for hypertension. The document provides detailed examples of therapeutic diet modifications for various medical conditions.
Trematodes, also known as flukes, are parasitic worms that cause diseases like schistosomiasis. They have a complex lifecycle involving freshwater snails and humans or other mammals as hosts. The parasites penetrate the skin and migrate to internal organs, potentially causing symptoms like blood in the urine. Trematode diseases are most common in tropical areas where water sources can become contaminated with infected snail excretions.
The document defines the International Council of Nurses, Lesotho Nurses Association, and family. The ICN was founded in 1899 and is headquartered in Switzerland. It represents nurses worldwide and advocates for quality care. The LNA acts as the voice of nurses in Lesotho by advocating for their welfare. Both a family and the LNA protect members' rights, provide regulation guidelines, and educate their members.
Lipids are organic compounds that are greasy and insoluble in water but soluble in organic solvents. Lipids include fats and oils, with fats being solid at room temperature and oils being liquid. Lipids contain carbon, hydrogen, and oxygen and serve several important functions in the body such as storing energy, transporting fat-soluble substances, and as structural components of cell membranes, hormones, and vitamins. Sources of lipids include both saturated fats from animal products and unsaturated fats from plants and fish.
The document summarizes the structure and function of the human ear. It describes the ear as having three main parts: the outer, middle, and inner ear. The outer ear collects sound waves and directs them through the auditory canal to the middle ear, where the vibrations are transmitted through three small bones to the inner ear. In the inner ear, fluid waves stimulate hair cells to generate nerve impulses that travel to the brain for hearing and balance. The ear detects sound properties like pitch from frequency and volume from amplitude to enable hearing perception.
The document provides information about the structure and function of the skin. It discusses the three main layers of the skin - the epidermis, dermis, and hypodermis. The epidermis contains keratinocytes, melanocytes, Langerhans cells, and tactile cells arranged in five layers. The dermis lies underneath and contains papillary and reticular layers made of collagen, elastin, and fibers. The deepest layer, the hypodermis, contains fat and helps insulate the body. The document also covers skin color, thick and thin skin types, and common types of skin cancer.
This document summarizes the physiology of respiration. It describes pulmonary ventilation as the process of breathing involving air exchange between the lungs and atmosphere. Inspiration occurs when intercostal muscles and diaphragm contract, enlarging the thoracic cavity and decreasing pressure to draw air into the lungs. Expiration is passive, as muscles relax and lungs recoil, increasing pressure to expel air. It also defines lung volumes like tidal volume and inspiratory reserve volume.
There are four respiratory volumes that describe lung capacity: tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume. There are also several respiratory capacities, including inspiratory capacity, functional residual capacity, vital capacity, and total lung capacity. Dalton's Law of Partial Pressure states that the total pressure of a gas mixture is the sum of the partial pressures of each individual gas in the mixture. Henry's Law specifies that the amount of gas dissolved in a liquid is proportional to its partial pressure in a gas mixture in contact with that liquid.
Chicken pox, or varicella, is an acute, highly contagious disease caused by the varicella zoster virus. It has an incubation period of 10-21 days and is characterized by crops of fluid-filled lesions that appear first on the face and neck, then spread to the trunk and rest of the body. The virus spreads through direct contact with infected individuals or droplets from their respiratory secretions.
The bioecological system theory proposes that human development is influenced by multiple contexts and environmental systems, including the microsystem of immediate family and school settings, the mesosystem of interactions between microsystems, the exosystem of broader social institutions, and the macrosystem of cultural values and beliefs, all operating within the chronosystem of environmental changes over time. These various ecological systems interact bidirectionally to shape human development.
This document discusses the use of heat therapy and hydrotherapy to treat various medical conditions. Warming therapy can be used to treat hypothermia by gradually raising the patient's core temperature using methods like warm water immersion, heated blankets, or intravenous warm fluids. Hydrotherapy provides pain relief and enables exercise of joints without stress through the buoyancy of warm water. It can also aid in debridement of burns and removal of dressings. Local heat treatments like hot water bottles, electrical pads, or infrared lamps relieve pain and encourage blood flow. Therapeutic warm baths are useful for loosening dressings or removing material from wounds.
This document discusses poisons and falls in a hospital setting. It defines a poison as a substance that damages living tissues and has harmful or fatal effects. Poisoning in hospitals can occur through prolonged medication use, overdoses, inhalation of cleaning chemicals, and contaminated food. Dangers of poisoning include seizures, gastrointestinal issues, breathing difficulties, coma, organ damage, and rashes. Prevention methods include securely storing poisons, proper labeling of chemicals, and disposal of old medications. Falls are defined as losing balance and collapsing or moving from high to low levels quickly without control. Falls can be caused by slippery floors, medication side effects, impaired vision, and improper waste disposal. Dangers of falls include injuries,
Restraints are devices used to limit a patient's movement and can become medico-legal hazards if not used properly. Restraints should only be used to prevent falls, limit movement, or prevent a patient from hurting others. Common types of restraints include belt restraints, wrist restraints, boxing gloves, and restraining sheets, but they can become hazards if too tight, applied incorrectly, or the wrong size. Nurses must be careful when using restraints to avoid threats to patient safety.
The document defines implementation as the performance of nursing interventions necessary to achieve the goals of nursing care. It outlines three types of interventions: dependent, which use cognitive skills; independent, which use technical skills; and interdependent, which use interpersonal skills. The implementation process involves efficiently and safely assessing patients, reviewing care plans, organizing resources, anticipating complications, and performing nursing interventions. Direct care involves interacting with patients, while indirect care supports direct care through administrative actions like documentation.
This document discusses electrical hazards, how they occur due to factors like high voltage, incorrect wiring, and overloading sockets. Electrical hazards can result in electric shocks, burns, and falls from tripping over wires. Preventive measures include properly insulating wiring, servicing equipment regularly, cleaning equipment properly, using sockets safely away from water and out of reach of children, and avoiding overloading circuits.
Motivation refers to factors that activate, maintain, and direct behavior towards a goal. The document discusses several general theories of motivation including instincts, drive reduction theory, homeostasis, arousal theory, cognitive approaches, and incentives approaches. It also describes Maslow's hierarchy of needs model which arranges human motivation needs in a pyramid with basic physiological and safety needs at the bottom and self-actualization at the top. Maslow's theory is that lower level needs must be satisfied before higher level needs.
Adultery can have serious psychological and medical consequences. Psychologically, it can cause intense guilt, depression in the unfaithful partner, deep distress in the betrayed partner, and potentially even violence or death. It frequently leads to marriage breakups and unhappiness for any children involved due to broken trust and loss of intimacy. Medically, adultery increases the risk of acquiring sexually transmitted diseases or causing an unplanned pregnancy due to unprotected sex with a new partner.
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Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
2. CARDIOVASCULAR SYSTEM
Is also called circulatory system
Consist of heart (muscular pumping device)
& the vessels e.g. veins, arteries & capillaries
It begins to beat regularly early in the fourth
week after fertilization
It continually propels oxygen, nutrients,
wastes & many other substances into the
interconnecting blood vessel supplying body
organs
3. LOCATION OF THE HEART
A four-chambered, shaped & sized like a
persons closed fist
Lies in the mediastinum (middle region of the
thorax) behind the body of the sternum,
between the second rib to the fifth intercostal
space.
Is about 12-14 cm
4. LOCATION (CONT.)
Two third of its mass is to the left of the
midline of the body & one third is to the right
Apex lie on the diaphragm, pointing to the left
Apical pulse can be felt, this is caused by the
apex contracting the chest wall (on the fifth &
six rib)
Base of the heart lie bellow the second rib
5. SIZE & SHAPE
About size of the fist
Hollow cone-shape
It is broad, flat base or posterior surface
about 9cm
At birth, it is transverse (wider) it appear
larger as oppose to the diameter of chest
cavity
6. SHAPE & SIZE (CONT.)
Between puberty & 25yrs old, it attain its
adult shape & weight, about 310g for males
& 225g for females
In adult, its shape resemble that of the chest
For tall individuals, it is elongated, for short
ones is transverse (wide)
7. COVERING
Is covered by the pericardium, which
consist of two parts
1. Fibrous portion: tough, loose fitting
inextensible sac. Its functions are as follows:
Protect the heart
Prevent overfilling of the heart with blood
Anchor it to the surrounding structures.
8. PARTS OF PERICARDIUM (CONT.)
2. Serous portion: lies inside the fibrous
pericardium
It is thin & slippery & consist of two layers
Parietal layer lies inside the fibrous
pericardium & visceral layer adheres to the
outside of the heart
Pericardial space (cavity) with pericardial
fluid separate the two layers
10. STRUCTURE/LAYERS OF THE HEART
Three distinct layers of tissue make up the
walls of the heart
o Epicardium: outer layer of the heart wall, it
is often infiltrated with fat in older people
o Myocardium: is thick, contractile middle
layer (layer that contracts). It compress the
heart activities and blood within them with
great force without fatigue
11. LAYERS (CONT.)
NB myocardium is thicker in some areas than
the other
o Endocardium: is a delicate inner layer of the
endothelial tissue (type of a membranous
tissue that lines the heart & blood vessels).
Endocardium regulate the flow of blood
through the chambers of the heart
12. CHAMBERS OF THE HEART
Is divided into four cavities
Two upper chambers are called atria/atrium
The lower chambers are called ventricles
NB: chambers are separated by the septum,
Interatria septum (between the atria)
Intervetricular septum (between the
ventricles)
13. ATRIA
Called receiving chambers as they receive
blood from the veins (are 3, superior, inferior
vena cava & coronary sinus
It alternately relax & contract to receive blood
then push it into the lower chamber
They move blood to a small distance, don’t
need great pressure, so their myocardial wall
is not very thick
14. ATRIA
Four pulmonary vein enter the left atrium (are
vein that transport blood from the lungs back
to the heart
Auricle- earlike flap protruding from each
atrium
15. VENTRICLES
Two lower chambers known as “pumping
chambers” or discharging chambers”
They push blood to the large network of
blood vessels
Are thicker than atria because great force is
needed to pump blood to a large distance
Left ventricle is thicker than the right as it
push blood further
16. VENTRICLES (CONT.)
Internal walls of ventricular chamber are
irregular ridges of muscle called trabeculae
carneae
Right V pumps blood into pulmonary trunk
which transport the blood to the lungs
Left V ejects blood to the aorta (which is the
largest artery (which is the largest artery in
the body)
17. VALVES OF THE HEART
Are mechanical devices that permit the flow
of blood in one direction only (prevent back
flow)
There are four sets of valves important to
normal functioning of the heart
I. Atrioventicular valves
II. Semilunar valves
III. Aortic semilunar
IV. Pulmonary semilunar valve
18. ATRIOVENTRICULAR VALVES
The right AV orifice consist of the three flaps
(cup) of endocardium
Is also called tricuspid valve
Left AV orifice has two flaps (cup)
Is also called bicuspid (mitral) valve
NB: AV valves prevent blood from flowing back
into the atria from the ventricle when it contract
19. SEMILUNAR VALVES
Half moon-shaped flaps growing out from the
lining of the pulmonary artery & aorta
SL valves prevent blood from flowing back
into the ventricles from the aorta &
pulmonary artery
20. VALVE (CONT.)
- Aortic semilunar valve: valve at the entrance
of the aorta
Pulmonary semilunar valve: valve at the
entrance of pulmonary artery
NB: all the valves open & close in response to
the differences in pressure
21. FLOW OR PATHWAY OF BLOOD THROUGH HEART
Has two side by side pumps (pulmonary &
systemic circuit)
22. BLOOD SUPPLY OF HEART TISSUE
How the blood get nourishment?
It is regarded as a shortest circulation in the
body
Myocardial cells receive blood right & left
coronary arteries(which branch from aorta &
via main branches)
Ventricles receive blood from branches of
both right & left coronary arteries
23. BLOOD SYPPLY (CONT.)
Most abundant blood supply goes to the
myocardium of the left ventricle because the left
ventricle does the most work & so needs the
most oxygen & nutrients delivered to it
The right coronary supply the right side of the
heart, this artery branches into two, the right
marginal artery (supply the right side of the
heart) & posterior interventricular artery(which
run to the heart apex & supply posterior
ventricular wall)
24. BLOOD SUPPLY (CONT.)
Few anastomoses (connections exist
between the larger branches of coronary
arteries. If main route become obstructed,
anastomoses provide collateral circulation to
a part. NB there will be inadequate supply of
nutrients
Complete blockage leads to tissue death &
heart attack
25. CARDIAC VEINS(VEINS OF CORONARY
CIRCULATION)
Veins follow a course that closely parallels
that of coronary artery
After going through cardiac veins, blood
enters the coronary sinus to drain into the
right atrium
Several veins drain directly into the right
atrium
26. CONDUCTION SYSTEM OF THE HEART
Heart has intrinsic system, is automatically
stimulated without external stimulation
Consist of four structures – Sinoatrial (SA)
node, Atrioventricular (AV) node,
Atrioventricular (AV) bundle & the Purkinje
fiber
27. CONDUCTION (CONT.)
SA node (pace maker) : consist of hundreds
of cells located in the right atrial wall near the
opening of superior venacava
Functions
Generate impulse about 75 times every
minute
Sets the pace of the heart (determines the
heart rate), they possess an intrinsic rhythm
28. CONDUCTION (CONT.)
This means that without any nerve impulses
from the brain & spinal cord, they themselves
initiate impulse at regular intervals.
That means the firing of the SA node cause
atrial contraction
AV node: small mass of special cardiac
muscle tissue, lie in the right atrium along the
lower part of the interatrial septum, is above
tricuspid valve
29. CONDUCTION (CONT.)
As the action potential enter the AV node
from the right atrium, its conduction slows to
allow complete contraction of both atrial
chamber before the impulse reaches the
ventricle
Meaning there is a delay here, electrical
signal takes 0,1 of a second to pass through
into the ventricle. This allows the atria to
finish contracting before ventricles starts
30. CONDUCTION (CONT.)
AV bundle (bundle of His)- originate in AV node,
extend by two branches down the two sides on
the interventricular septum, & continue as a
purkinje fibers
After passing slowly through the Av node,
conduction velocity increase as the impulse is
relayed through the AV bundle into the ventricles
31. CONDUCTION (CONT.)
Here, right & left bundle branches and the
purkinge fibers in which they terminate
conduct the impulses throughout muscle of
both ventricles, stimulate them to contract
almost simultaneously
Purkinge fibers extend out to the papillary
muscle & lateral wall of ventricles
32. CONDUCTION (CONT.)
NB: SA node initiates each heartbeat & set
its pace- hence is called pace maker
The SA node normally drives the heart at the
rate of 75 beats per minutes
33. NERVE SUPPLY TO THE HEART
The heart is influenced by autonomic nerves
originating in the cardiovascular center in the
medulla oblongata which reach it through the
autonomic nervous system
These consist of parasympathetic fibers
combine to form cardiac plexuses located
close to the arch of the aorta
34. NERVE SUPPLY (CONT.)
The heart is influence by autonomic nerves
originating in the cardiovascular center in the
medulla oblongata which reach it through the
autonomic nervous system
These consist of parasympathetic &
sympathetic nerve & their actions are
antagonistic
35. NERVE SUPPLY (CONT.)
Both sympathetic fibers & parasympathetic
fibers combine to form cardiac plexus located
close to the arch of the aorta
From the cardiac plexus, fibers accompany
the right & left coronary arteries to enter the
heart
Most fibers end in the SA node, but some
end in the AV node & in the atria myocardium
36. NERVE SUPPLY (CONT.)
The vagus nerves supply mainly the SA & AV
nodes & atria muscles. Parasympathetic
stimulation reduces the rate at which
impulses are produced, decreasing the rate
& force of heart beat called (inhibitory or
depressor nerves)
37. NEARVE SUPPLY (CONT.)
The sympathetic nerve supply the SA & AV
node & myocardium of the atria & ventricles.
Sympathetic stimulation increases the rate &
force of the heart beat (are called the
accelerator
38. ELECTROCARDIOGRAM (ECG)
Is the graphic representation of cardiac
conduction cycle
A graphic record of the heart electrical
activity, its conduction of impulses, a record
of electrical events that precedes the
conduction of the heart
This record of electrical events must be
interpreted to make a difference between life
& death
39. TO PRODUCE ECG
Electrodes of ECG are attached to a person
Changes in voltages are recorded that
represent changes in the hearts electrical
activity, are observed as deflection of a line
drown on the paper or traced on the video
monitor
40. ECG (CONT.)
Normal ECG has three distinguishable wave or
deflection
P wave: is the first & small wave, which
represent depolarization of the atria from the
SA node. Last at about 0.08second. 0.1
second after the P wave begins, the atria
contract
41. ECG (CONT.)
QRS complex :represents depolarization of
the ventricles & repolarization of the atria.
That means the ventricle contracts & the
atria relaxes. Duration of QRS complex is
0.08 second
42. ECG (CONT.)
T wave: represent repolarization of ventricles.
Duration of T wave last about 0.16 seconds.
Repolarization is slower than depolarization that
is why T wave has a lower height than QRS
wave
NB: the measurement of the intervals between
P, QRS & T wave can provide information about
the rate of conduction of an action potential
through the heart
43. HEART SOUNDS
One is not conscious of his heartbeat unless
he uses stethoscope below the left nipple to
hear the heart beat
It make typical sound during each cardiac
cycle like “lubb-dupp”
This is associated with the closing of heart
valves
The pause between indicate period when the
heart is relaxing
44. HEART SOUND (CONT.)
Systolic sound: first sound caused by the
contraction of the ventricles & by vibration of
closing Atrioventricular valves. It is longer
than diastolic sound
Diastolic sound: is short, sharp sound
caused by vibrations of the closing of the
semiluner valve at the beginning of the
ventricular relaxation
45. HEART SOUND (CONT.)
NB: heart sounds have clinical significance
because they give information about the
functioning of the valves of the heart
Abnormal heart sounds called murmurs,
usually reflect valve problems
46. THE CARDIAC CYCLE
The heart acts as a pump & its action
consists of a series of events known as the
cardiac cycle
Cardiac cycle means a complete heat beat
During each heart beat, the heart contracts &
then relaxes
Period of contraction is called systole, that of
relaxation is called diastole of both atria
&both ventricles
47. CARDIAC CYCLE (CONT.)
NB: two atria contract simultaneously, then as
the atria relax, two ventricles contract and then
relax
Cardiac cycle include all events associated
with the blood flow through the heart during
one complete heat beat- atria systole & atria
diastole followed by ventricular systole &
diastole
48. PHASES OF CARDIAC CYCLE
Phase 1 Atria systole
Is the contraction of atria, there is a complete
emptying of blood out of the atria into the
ventricles
AV valves are open during this phase,
semilunar valves are closed so that blood
does not re enter from pulmonary artery or
aorta
49. PHASE 1 (CONT.)
Ventricles are relaxed & filling with blood
The cycle begin with P wave of the ECG
50. CYCLE (CONT.)
Phase 2 Isovolumetric ventricular contraction
Occur between the start of ventricular systole
(contraction of the ventricles) and the
opening of semilunar valves
The ventricular volume remain constant as
the pressure is increased rapidly
51. PHASE 2 (CONT.)
The onset of ventricular systole coincides
with the R wave of the ECG & the
appearance of the first heart sound
52. CYCLE (CONT.)
Phase 3 Ejection
Semilunar valves open & blood is ejected
from the heart when the pressure gradient in
the pulmonary artery & aorta
Reduced ejection is characterized by a less
abrupt decrease in ventricular volume.
coincide
53. PHASE (CONT.)
Residual volume, normally remains in the
ventricles at the end of ejection period
54. CYCLE (CONT.)
Phase 4 Isovolumetric ventricular relaxation
Ventricular distole (relaxation) begin with this
phase
Occurs between closure of the semilunar
valve & opening of AV