268099 human-heart
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The document provides information about the structure and function of the human heart. It is divided into sections on the right heart and left heart. The right heart receives deoxygenated blood from the body and pumps it to the lungs. The left heart receives oxygenated blood from the lungs and pumps it out to the body through the aorta to support the systemic circulation. Key components include the right and left atria and ventricles, tricuspid and mitral valves, and major blood vessels like the vena cavae, pulmonary artery and veins, and aorta.
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Human Heart
The document provides information about the structure and function of the human heart. It is divided into sections on the right heart and left heart. The right heart receives deoxygenated blood from the body and pumps it to the lungs. The left heart receives oxygenated blood from the lungs and pumps it out to the body through the aorta to sustain the circulatory system. Key components include the right and left atria and ventricles, tricuspid and mitral valves, and major blood vessels like the vena cavae, pulmonary artery and veins, and aorta.
Human heart
Examville.com provides online practice tests, live classes, tutoring, study guides and Q&A for test preparation. It offers premium content in addition to free resources.
The document describes the anatomy and function of the heart. It is divided into detailed sections on the right and left sides of the heart. The right side receives deoxygenated blood and pumps it to the lungs, while the left side receives oxygenated blood from the lungs and pumps it out to the body. Key components discussed include the atria, ventricles, valves, arteries and veins that allow blood to circulate through the heart and into the lungs or body as needed.
Bio gallery walk
The cardiac skeleton provides structure to the heart and forms partitions between the chambers. It is made of dense connective tissue and collagen. The cardiac skeleton also anchors the heart valves and influences their function. There are four heart valves total - two atrioventricular valves between the atria and ventricles, and two semilunar valves between the ventricles and arteries. The atrioventricular valves have chordae tendineae that prevent them from opening back into the atria. The semilunar valves do not have chordae tendineae and instead rely on blood pressure to close.
268099 human-heart
The human heart is a muscular organ that pumps blood through the body. It is divided into four chambers - two atria that receive blood and two ventricles that pump blood out. The right side receives deoxygenated blood from the body and pumps it to the lungs. The left side receives oxygenated blood from the lungs and pumps it out to the body through the aorta. Valves control the direction of blood flow between the chambers and vessels. The heart is a vital organ that circulates blood continuously through two circuits - pulmonary circulation to the lungs and systemic circulation to the body.
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The document describes the structure and function of the heart and circulatory system. It discusses the major veins that return deoxygenated blood to the right atrium, such as the superior and inferior vena cava. It also describes the four chambers of the heart, including the right and left atria that receive blood and the right and left ventricles that pump blood to the lungs and body. The valves such as the tricuspid and bicuspid valves prevent backflow of blood through the heart.
Heart
The heart is a hollow muscular organ located in the chest cavity between the lungs. It has four chambers - two upper chambers called atria and two lower chambers called ventricles. The heart pumps blood through two separate circuits - the right side pumps blood to the lungs and the left side pumps blood throughout the body. Blood flows through the heart via valves that ensure it only flows in one direction. The heart is supplied with oxygenated blood by the left and right coronary arteries and its rhythm is controlled by electrical pathways.
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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.
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Human Heart
The document provides information about the structure and function of the human heart. It is divided into sections on the right heart and left heart. The right heart receives deoxygenated blood from the body and pumps it to the lungs. The left heart receives oxygenated blood from the lungs and pumps it out to the body through the aorta to sustain the circulatory system. Key components include the right and left atria and ventricles, tricuspid and mitral valves, and major blood vessels like the vena cavae, pulmonary artery and veins, and aorta.
Human heart
Examville.com provides online practice tests, live classes, tutoring, study guides and Q&A for test preparation. It offers premium content in addition to free resources.
The document describes the anatomy and function of the heart. It is divided into detailed sections on the right and left sides of the heart. The right side receives deoxygenated blood and pumps it to the lungs, while the left side receives oxygenated blood from the lungs and pumps it out to the body. Key components discussed include the atria, ventricles, valves, arteries and veins that allow blood to circulate through the heart and into the lungs or body as needed.
Bio gallery walk
The cardiac skeleton provides structure to the heart and forms partitions between the chambers. It is made of dense connective tissue and collagen. The cardiac skeleton also anchors the heart valves and influences their function. There are four heart valves total - two atrioventricular valves between the atria and ventricles, and two semilunar valves between the ventricles and arteries. The atrioventricular valves have chordae tendineae that prevent them from opening back into the atria. The semilunar valves do not have chordae tendineae and instead rely on blood pressure to close.
268099 human-heart
The human heart is a muscular organ that pumps blood through the body. It is divided into four chambers - two atria that receive blood and two ventricles that pump blood out. The right side receives deoxygenated blood from the body and pumps it to the lungs. The left side receives oxygenated blood from the lungs and pumps it out to the body through the aorta. Valves control the direction of blood flow between the chambers and vessels. The heart is a vital organ that circulates blood continuously through two circuits - pulmonary circulation to the lungs and systemic circulation to the body.
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Heart
The heart is a hollow muscular organ located in the chest cavity between the lungs. It has four chambers - two upper chambers called atria and two lower chambers called ventricles. The heart pumps blood through two separate circuits - the right side pumps blood to the lungs and the left side pumps blood throughout the body. Blood flows through the heart via valves that ensure it only flows in one direction. The heart is supplied with oxygenated blood by the left and right coronary arteries and its rhythm is controlled by electrical pathways.
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The document provides an overview of the anatomy of the heart. It describes the heart as a hollow muscular organ divided into four chambers - the right and left atria and ventricles. Each chamber is then described in detail, including its size, location within the heart, internal structures like valves and openings, and relations to other cardiovascular structures. Key components summarized include the four chambers, their internal structures like valves and openings, and basic relations to surrounding areas in the thoracic cavity.
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The heart is a hollow muscular organ that acts as the central pump of the circulatory system. It has four chambers - two atria that receive blood and two ventricles that pump blood out. The heart is located in the middle mediastinum in the chest cavity. It has a fibrous pericardium covering and is protected by the pericardial sac that contains serous fluid. The heart has right and left sides, each with an atrium and ventricle, and valves that ensure one-way blood flow.
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The atrioventricular valves include the tricuspid valve between the right atrium and ventricle, and the mitral/bicuspid valve between the left atrium and ventricle.
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The document provides information about the anatomy and physiology of the heart. It discusses the following key points in 3 sentences:
The heart is a muscular organ located in the mediastinum that pumps blood through the circulatory system via four chambers - two upper atria and two lower ventricles. It has three layers - epicardium, myocardium and endocardium - and is surrounded by the pericardium. The heart has a conduction system including the sinoatrial node which acts as the pacemaker, generating electrical impulses that cause coordinated contractions of the atria and ventricles to efficiently circulate blood.
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The heart is a hollow muscular organ responsible for pumping blood through the body. It is enclosed in a sac called the pericardium and located in the mediastinum cavity in the center of the chest. The right side of the heart collects deoxygenated blood from the body and pumps it to the lungs, while the left side collects oxygenated blood from the lungs and pumps it out to the body. The heart's rhythm is controlled by electrical signals that cause the muscles to contract, originating from a pacemaker in the right atrium and traveling through conduction pathways.
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The document describes the anatomy and structures of the heart. It discusses:
- The heart is surrounded by the pericardium, a double-walled sac that has an outer fibrous layer and inner serous layers separated by fluid.
- The heart has four chambers - two upper atria that receive blood and two lower ventricles that pump blood out. Blood flows through valves between the chambers.
- The heart wall has three layers - the outer epicardium, middle muscular myocardium, and inner endothelial endocardium.
- The heart is supplied by the right and left coronary arteries and drains into the coronary sinus vein.
- Nerves from the autonomic nervous system
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The heart is a hollow, muscular organ located slightly left of center in the chest. It is surrounded by three layers of tissue - the outer fibrous pericardium, middle muscular myocardium, and inner endothelial endocardium. The heart is divided into four chambers - right atrium, right ventricle, left atrium, and left ventricle - with valves that ensure one-way blood flow. Deoxygenated blood enters the right atrium from the body and is pumped to the lungs via the right ventricle. Oxygenated blood returns to the left atrium from the lungs and is pumped back out to the body by the left ventricle.
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The document provides an overview of the anatomy of the human heart, describing the internal and external structures such as the chambers, valves, vessels, conduction system, and blood supply. Key details include the layers of the heart wall, the differences between the right and left sides of the heart, the function of the atria and ventricles, and the roles of the major arteries and veins in the cardiac circulation. The presentation aims to educate medical students on the gross and microscopic anatomy of the heart.
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The document provides an overview of heart anatomy. It describes the heart's location in the thorax and its dimensions. The four chambers - right and left atria and ventricles - are introduced. Each chamber's function is summarized as receiving or pumping blood. The three layers of the heart - epicardium, myocardium, and endocardium - are defined. The cardiac skeleton is described as a fibrous structure that partitions the chambers and anchors the heart valves.
Anatomy of heart
Hello friends..you can use these notes for your convenience as they are taken from many other standard books..thank you..!
The chambers of heart
The human heart consists of 4 chambers - two upper atria and two lower ventricles separated by muscular walls. The left atrium opens to the left ventricle and right atrium to the right ventricle, and valves between the chambers ensure blood flows only in one direction from the atria to the ventricles. Arteries carry blood away from the heart while veins bring blood back to the heart, and valves in the arteries also prevent backflow into the heart.
Structure of heart
The heart is a hollow, muscular organ located slightly left of center in the chest. It has four chambers - the right and left atria receive blood, and the right and left ventricles pump it out. The heart is surrounded by membranes and has three layers - the outer fibrous pericardium, middle muscular myocardium, and inner endothelial endocardium. It uses valves to ensure one-way blood flow, pumping deoxygenated blood to the lungs and oxygenated blood throughout the body in continuous circulation. The coronary arteries supply the heart with oxygenated blood.
Heart valves- A detailed medical information about heart valves .
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The heart begins as a single tube in the embryo but undergoes remodeling to form four chambers. Valves develop within the heart to ensure blood flows in only one direction. The heart's electrical conduction system also develops to coordinate the contractions of the atria and ventricles. By adulthood, the heart has separate pumping systems for circulating blood to the lungs and body with valves that prevent backflow between chambers.
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The document provides an anatomy overview of the heart under several sections:
1. Location and structure of the heart in the chest cavity surrounded by membranes and bones.
2. Size and measurements of the heart.
3. The pericardium sac and layers that cover and lubricate the heart.
4. Topographical landmarks and structures of the heart including valves, arteries, and septum.
5. Details of the individual chambers including atria, ventricles, valves, arteries and comparisons between right and left sides.
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The document provides an overview of the anatomy of the heart. It describes the heart as a hollow muscular organ divided into four chambers - the right and left atria and ventricles. Each chamber is then described in detail, including its size, location within the heart, internal structures like valves and openings, and relations to other cardiovascular structures. Key components summarized include the four chambers, their internal structures like valves and openings, and basic relations to surrounding areas in the thoracic cavity.
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The heart is a hollow muscular organ that acts as the central pump of the circulatory system. It has four chambers - two atria that receive blood and two ventricles that pump blood out. The heart is located in the middle mediastinum in the chest cavity. It has a fibrous pericardium covering and is protected by the pericardial sac that contains serous fluid. The heart has right and left sides, each with an atrium and ventricle, and valves that ensure one-way blood flow.
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This document provides an anatomy overview of the heart. It begins with an introduction discussing the heart's location, size, and shape. It then covers the heart's embryology, external anatomy including the four chambers and major vessels, and internal anatomy such as the coronary arteries and circulation. The document discusses the heart's conduction system, development, and common sites of coronary blockage. It concludes with some pathological findings that may be seen in cases of sudden cardiac death and outlines several cardiac dissection methods.
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This presentation will help you to get to known about the human heart in very much clear way. It will help you alot in making your concepts clear regarding the human heart and it's functioning.
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The document discusses the valves of the heart. There are two types of valves - atrioventricular valves and semilunar valves.
The atrioventricular valves include the tricuspid valve between the right atrium and ventricle, and the mitral/bicuspid valve between the left atrium and ventricle.
The semilunar valves include the pulmonary valve between the right ventricle and pulmonary artery, and the aortic valve between the left ventricle and aorta. Each valve has specific roles in regulating blood flow and preventing backflow through the heart chambers and vessels.
structure and functions of heart PPT, SSC AP Srinivas Nallapu
The document describes the structure and function of the human heart. It notes that the heart is a hollow organ made of cardiac muscle located in the middle of the thoracic cavity. It is enclosed in a double-layered sac called the pericardium and divided internally into four chambers - two upper chambers called auricles and two lower chambers called ventricles. Deoxygenated blood enters the right auricle from the vena cavae and is pumped to the right ventricle. It then passes through the pulmonary artery to the lungs. Oxygenated blood returns to the left auricle via the pulmonary veins and is pumped to the left ventricle. It then passes through the aorta to be distributed to
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The document provides information about the anatomy and physiology of the heart. It discusses the following key points in 3 sentences:
The heart is a muscular organ located in the mediastinum that pumps blood through the circulatory system via four chambers - two upper atria and two lower ventricles. It has three layers - epicardium, myocardium and endocardium - and is surrounded by the pericardium. The heart has a conduction system including the sinoatrial node which acts as the pacemaker, generating electrical impulses that cause coordinated contractions of the atria and ventricles to efficiently circulate blood.
Anatomy Of The Heart
The heart is a hollow muscular organ responsible for pumping blood through the body. It is enclosed in a sac called the pericardium and located in the mediastinum cavity in the center of the chest. The right side of the heart collects deoxygenated blood from the body and pumps it to the lungs, while the left side collects oxygenated blood from the lungs and pumps it out to the body. The heart's rhythm is controlled by electrical signals that cause the muscles to contract, originating from a pacemaker in the right atrium and traveling through conduction pathways.
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The document describes the anatomy and structures of the heart. It discusses:
- The heart is surrounded by the pericardium, a double-walled sac that has an outer fibrous layer and inner serous layers separated by fluid.
- The heart has four chambers - two upper atria that receive blood and two lower ventricles that pump blood out. Blood flows through valves between the chambers.
- The heart wall has three layers - the outer epicardium, middle muscular myocardium, and inner endothelial endocardium.
- The heart is supplied by the right and left coronary arteries and drains into the coronary sinus vein.
- Nerves from the autonomic nervous system
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The heart is a hollow, muscular organ located slightly left of center in the chest. It is surrounded by three layers of tissue - the outer fibrous pericardium, middle muscular myocardium, and inner endothelial endocardium. The heart is divided into four chambers - right atrium, right ventricle, left atrium, and left ventricle - with valves that ensure one-way blood flow. Deoxygenated blood enters the right atrium from the body and is pumped to the lungs via the right ventricle. Oxygenated blood returns to the left atrium from the lungs and is pumped back out to the body by the left ventricle.
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The document provides an overview of the anatomy of the human heart, describing the internal and external structures such as the chambers, valves, vessels, conduction system, and blood supply. Key details include the layers of the heart wall, the differences between the right and left sides of the heart, the function of the atria and ventricles, and the roles of the major arteries and veins in the cardiac circulation. The presentation aims to educate medical students on the gross and microscopic anatomy of the heart.
Gross anatomy of heart
The document provides an overview of heart anatomy. It describes the heart's location in the thorax and its dimensions. The four chambers - right and left atria and ventricles - are introduced. Each chamber's function is summarized as receiving or pumping blood. The three layers of the heart - epicardium, myocardium, and endocardium - are defined. The cardiac skeleton is described as a fibrous structure that partitions the chambers and anchors the heart valves.
Anatomy of heart
Hello friends..you can use these notes for your convenience as they are taken from many other standard books..thank you..!
The chambers of heart
The human heart consists of 4 chambers - two upper atria and two lower ventricles separated by muscular walls. The left atrium opens to the left ventricle and right atrium to the right ventricle, and valves between the chambers ensure blood flows only in one direction from the atria to the ventricles. Arteries carry blood away from the heart while veins bring blood back to the heart, and valves in the arteries also prevent backflow into the heart.
Structure of heart
The heart is a hollow, muscular organ located slightly left of center in the chest. It has four chambers - the right and left atria receive blood, and the right and left ventricles pump it out. The heart is surrounded by membranes and has three layers - the outer fibrous pericardium, middle muscular myocardium, and inner endothelial endocardium. It uses valves to ensure one-way blood flow, pumping deoxygenated blood to the lungs and oxygenated blood throughout the body in continuous circulation. The coronary arteries supply the heart with oxygenated blood.
Heart valves- A detailed medical information about heart valves .
heart valves are the one which regulates the blood flow and heart health and all in overall . this is a detailed study on all the valves of the heart
please comment
thank you
The Heart
The heart begins as a single tube in the embryo but undergoes remodeling to form four chambers. Valves develop within the heart to ensure blood flows in only one direction. The heart's electrical conduction system also develops to coordinate the contractions of the atria and ventricles. By adulthood, the heart has separate pumping systems for circulating blood to the lungs and body with valves that prevent backflow between chambers.
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structure and functions of heart PPT, SSC AP Srinivas Nallapu
structure and functions of heart PPT, SSC AP Srinivas Nallapu
Heart valves- A detailed medical information about heart valves .
Heart valves- A detailed medical information about heart valves .
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The document summarizes information about the human heart and heart disease. It discusses the basic anatomy and function of the heart, describing how blood flows through the heart's chambers and vessels. It also provides fun facts about the heart and lists several types of heart disease, including congenital heart defects, arrhythmias, coronary artery disease, dilated cardiomyopathy, and myocardial infarction.
Circulatory system aswathi
The document summarizes information about the human heart and heart disease. It discusses the basic anatomy and function of the heart, describing how blood flows through the heart's chambers and vessels. It also provides fun facts about the heart and lists several types of heart disease, including congenital heart defects, arrhythmias, coronary artery disease, dilated cardiomyopathy, and myocardial infarction.
A red blood cell enters the right atrium from the superior vena cava..pdf
A red blood cell enters the right atrium from the superior vena cava. In order, list ALL the
structures it passes through to reach the right coronary artery. Be sure to include ALL the
chambers of the heart, and the valves of the heart that it passes through. A red blood cell enters
the celiac trunk from the aorta. In order, list ALL the structures it passes through to reach the
right carotid artery. Be sure to include ALL the chambers of the heart, and the valves of the heart
that it passes through.
Solution
Q.No 1
Heart contains four chambers, two atria and a couple of ventricles. The blood that is definitely
returned to the right atrium is deoxygenated and s passed into the right ventricle to be pumped
through the pulmonary artery to the lungs for reoxygenation and elimination of carbon dioxide.
The left atrium receives newly oxygenated blood through the lungs with the pulmonary veins,
that may be passed throughout the strong left ventricle to be pumped through the aorta to the
various organs of one\'s body.
Superior Vena Cava
The superior vena cava is one of these two main veins bringing de-oxygenated blood from the
entire body to heart. Veins through the head and upper body feed into the superior vena cava,
which empties into the right atrium of the heart.
Inferior Vena Cava
The inferior vena cava is one of these two main veins bringing de-oxygenated blood from the
entire body to heart. Veins through the legs reducing torso feed into the inferior vena cava, which
empties into the right atrium of the heart.
Aorta
The aorta is the main single circulatory around the body. It is around the diameter from your
thumb. This vessel carries oxygen-rich blood from the left ventricle to different parts of one\'s
body.
Pulmonary Artery
The pulmonary artery is the vessel transporting de-oxygenated blood from the right ventricle to
the lungs. Perhaps the most common misconception is all arteries carry oxygen-rich blood. It
really is appropriate to classify arteries as vessels carrying blood away from the heart.
Pulmonary Vein
The pulmonary vein is the vessel transporting oxygen-rich blood through the lungs to the left
atrium. Perhaps the most common misconception is all veins carry de-oxygenated blood. It really
is appropriate to classify veins as vessels carrying blood to heart.
Papillary Muscles
The papillary muscles attach to the reduced percentage of the interior wall of one\'s ventricles.
They connect with the chordae tendineae, which attach to the tricuspid valve in the right
ventricle and the mitral valve around the left ventricle. The contraction of the papillary muscles
closes these valves. When the papillary muscles relax, the valves open.
Chordae Tendineae
The chordae tendineae are tendons linking the papillary muscles to the tricuspid valve in the
right ventricle and the mitral valve around the left ventricle. As the papillary muscles contract
and relax, the chordae tendineae transmit the resulting increase and reduce in tension to
respecti.
The human heart
The human heart is a muscular organ about the size of a closed fist located in the thoracic cavity. It pumps deoxygenated blood received from the veins to the lungs and oxygenated blood from the lungs to the arteries throughout the body. The heart has four chambers - right and left atria which receive blood, and right and left ventricles which pump blood out. It is surrounded by the pericardium and contains valves that ensure one-way blood flow. During each heartbeat or cardiac cycle, the atria contract to fill the ventricles which then contract to pump blood into the arteries while the valves open and close in the correct sequence.
CARDIOVASCULAR SYSTEM.pptx
The document describes the structure and function of the human heart. It discusses the heart's chambers, layers, septa, valves and blood flow through the heart. The cardiac cycle is summarized as including atrial relaxation to fill with blood, followed by atrial contraction to pump blood into ventricles. The ventricles then relax as they fill with blood before contracting to pump blood out of the heart. Heart sounds S1 and S2 occur during valve closing in this cycle.
heart anatomy pdf.pdf
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.
Blood and Nerve supply of the heart
Easy way to learn Blood supply of the heart and Blood supply of the hear. simple way to learn by trick and easy form.
cardiovescular system
Working of Human Heart .pptx
This document summarizes the structure and function of the human heart. It describes that the heart has four chambers to prevent mixing of oxygenated and deoxygenated blood. The two upper chambers are atria that receive blood, and the two lower chambers are ventricles that pump blood to the lungs and body. It also explains the cardiac cycle of heart contraction and relaxation in three phases - joint diastole, atrial systole, and ventricular systole. Additionally, it discusses the double circulation of blood through the heart and lungs in pulmonary circulation, and through the heart and body in systemic circulation. The sinoatrial node initiates heartbeats that then pass through the atrioventricular node to contract the ventric
Cardiovascular system (blood vessels, anatomy)
The circulatory system is an organ system that passes nutrients (such as amino acids, electrolytes and lymph), gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases and help stabilize body temperature and pH to maintain homeostasis.
Evolution of Heart
The primitive blueprint for the heart and circulatory system emerged with the arrival of the third mesodermal germ layer in bilaterians. Since then, hearts in animals have evolved from a single layered tube to a multiple chambered heart in due course of time.
3-pericardium & Heart.pptx
The pericardium is a fibroserous sac that encloses and protects the heart. It has two layers - a fibrous outer layer and a serous inner layer. The heart has four chambers - right and left atria which receive blood, and right and left ventricles which pump blood out. Each chamber has a specific structure and function in the circulation. The heart also has a conducting system that generates electrical signals to coordinate contractions and pumping of the heart.
Anatomy and physiology of heart, lung ,
The document describes the anatomy and physiology of the heart, lungs, thoracic cavity, and blood vessels. It discusses the location of the heart in the thoracic cavity and its layers, which include the epicardium, myocardium, and endocardium. The heart has four chambers - two atria that receive blood and two ventricles that pump blood. Blood flows through the heart in two circuits: pulmonary circulation from the heart to the lungs and systemic circulation from the heart to the rest of the body. The heart is supplied with blood and nutrients through the coronary circulation.
Science 9 Circulatory System
The circulatory system consists of the heart, blood vessels, and blood. The heart pumps oxygenated blood received from the lungs through the left side and deoxygenated blood through the right side to the lungs. It has four main valves - the mitral, aortic, tricuspid, and pulmonary valves - that ensure blood flows in one direction. The circulatory system delivers oxygen and nutrients throughout the body and removes waste via a network of arteries, veins, and capillaries. It is essential for sustaining life.
Heart (Its Structure & Function).pptx
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.
Heart in vetrebrates
Evolutionary change in heart of vertebrates
Heart is situated ventral to the oseophagus in the pericardial section of the coelom.
Heart is a highly muscular pumping organ that pumps blood into arteries and sucks it back through the veins.
In vertebrates it has undergone transformation by twisting from a straight tube to a complex multi-chambered organ.
. There has been an increase in the number of chambers in heart during evolution of vertebrates.
The heart is covered by a transparent protective covering, called pericardium. It is a single layer in fish.
Within pericardium there is a pericardial fluid, protects the heart from the external injury.
The evolution of the heart is based on the separation of oxygenated blood from deoxygenated blood for efficient oxygen transport.
Comp anatomy of heart
This document provides an overview of heart development and comparative anatomy across vertebrates. It describes how the heart originates from mesodermal tissue and develops into a tubular structure. Across species, the heart evolves from a two-chambered structure in fish to a four-chambered heart with complete separation of oxygenated and deoxygenated blood in mammals. Key developments include the formation of four chambers, completion of the interatrial and interventricular septa, and separation of pulmonary and systemic circulation. Differences in heart structure across fish, amphibians, reptiles, birds, and mammals are also summarized.
3-pericardium & Heart.pptx
The document summarizes the anatomy of the pericardium and heart. It describes the pericardium as a fibroserous sac that encloses the heart. It then discusses the layers of the pericardium - the fibrous pericardium and serous pericardium with its parietal and visceral layers. It also describes the surfaces, chambers, valves and conducting system of the heart.
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A red blood cell enters the right atrium from the superior vena cava..pdf
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