The circulatory system consists of the heart, blood vessels, and blood. The heart is a muscular pump made of four chambers that pumps blood through two circuits - the pulmonary circuit which sends blood to the lungs, and the systemic circuit which pumps blood to the entire body through arteries and veins. Blood carries oxygen, nutrients, hormones, and waste products and helps maintain homeostasis. Some common circulatory illnesses include arteriosclerosis, thrombosis, heart attacks, and angina.
Life of every organism depends on certain basic processes. Excretion is one among them. Different organisms follow different modes of excretion. In complex organisms including humans, there is a specialized system for excretion called human excretory system.
Life of every organism depends on certain basic processes. Excretion is one among them. Different organisms follow different modes of excretion. In complex organisms including humans, there is a specialized system for excretion called human excretory system.
Describe blood circulation in human heart
Describe the composition and functions of blood
Explain the function of lymphatic system
Explain the roles of immune system
compiled from various resources
Compare open and closed circulatory system
Identify different circulatory pathways in vertebrates
Explain the composition of human circulatory system and its functions
Describe capillary exchange in the tissues
Explain the human circulation system
Compiled from various resources
Not 100 % genuine slides, took from a couple of sources --> credits to those sources.
#important thing is students are able to learn conveniently
BIOLOGY GCE O level Syllabus
NOTE: NEED TO DOWNLOAD BECAUSE THERE ARE MANY MANY ANIMATIONS THAT HIDE SOME OF THE CONTENT
Describe blood circulation in human heart
Describe the composition and functions of blood
Explain the function of lymphatic system
Explain the roles of immune system
compiled from various resources
Compare open and closed circulatory system
Identify different circulatory pathways in vertebrates
Explain the composition of human circulatory system and its functions
Describe capillary exchange in the tissues
Explain the human circulation system
Compiled from various resources
Not 100 % genuine slides, took from a couple of sources --> credits to those sources.
#important thing is students are able to learn conveniently
BIOLOGY GCE O level Syllabus
NOTE: NEED TO DOWNLOAD BECAUSE THERE ARE MANY MANY ANIMATIONS THAT HIDE SOME OF THE CONTENT
A powerpoint designed for the South African Life Sciences syllabus for grade 11. Includes information about blood and it's transportation, the human heart, the lymph system etc. Hope it helps :)
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.
This power point presentation will describe heart and circulatory system. In visual and interactive way. It is great for high schools and getting people engaged.
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Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
5. Caracteristics of Blood Vessels
Arteries
have thick walls,
no valves and
carry blood away
from the heart
Capillaries
link arteries to veins.
Their wall is only one cell thick
and this allows substances to
pass into and out of the blood.
Veins
• have thin walls,
• valves, and
• carry blood to the heart
http://www.youtube.com/watch?v=CjNKbL_-cwA Types of blood vessels
6. 1.2 Parts of the Heart
It is a pump that pushes the blood into the arteries.
Is made of cardiac muscle, a special kind of muscle that never
tires.
Is divided into two sides by a wall called the septum.
7. It has got four chambers:
Atria: the two upper
chambers (singular:
atrium). They have thin
walls. They pump blood to
the ventricles.
Ventricles: the two lower
chambers. They pump
blood out of the heart.
right ventricle, with
thin wall, pumps the
blood to the lungs .
left ventricle, with
thicker and stronger
wall, pumps the blood
to the body.
8. Valves
Tricuspid valve and bicuspid valve or mitral valve,
between atria and ventricles.
Semilunar valves (aortic valve and pulmonary
valve) between ventricles and arteries.
Valves
prevent the
backflow of
blood.
http://vimeo.com/5588613 ==> valves working
11. 1.3 The Blood
Every person has 4 to 5 litres of blood on average.
55% of the blood is plasma
45% consists of blood cells and platelets.
(leukocytes)
They defend the body from infection
coagulation
(erythrocytes)
13. FUNCTIONS OF THE BLOOD
Transport of:
Nutrients
Waste products
Hormones
Oxygen and carbon dioxide
Keeping the normal temperature
of the body
Defence against disease
14. 2. Blood circulation
Blood circulation in human being is double
and complete
It has two circuits (general and pulmonary)
The blood in the veins never mixes
with the blood in the arteries
16. The movement of blood through the heart
1. Blood from the body enters the right atrium through the vena cava.
The atria contract, the blood is pushed through the tricuspid
valve, into the right ventricle.
2. When the right ventricle contracts, the blood is pumped through the
semilunar valve into the pulmonary arteries.
3. Blood goes to the lungs.
In the lungs, the blood collects up oxygen and gets rid of its carbon
dioxide.
4. It then comes back to the heart in the pulmonary vein which enters the
left atrium.
When the atria contract, the blood is pushed through the bicuspid o
mitral valve into the left ventricle.
5. The ventricles contract and this pushes the blood through the semilunar
valve to the main artery of the body, aorta.
6. Blood is pushed out to all around the body.
17. The stages of heartbeat (cardiac cycle)
Diastole: heart chambers relax.
Systole: heart chambers contract.
20. 4. Some illnesses of the circulatory system
Arteriosclerosis
Accumulation of substances (fats, calcium…) in the arteries, which causes them
to narrow and restricts the blood flow.
http://www.youtube.com/watch?v=qRK7-DCDKEA atherosclerosis
(a common form of arteriosclerosis in which fatty substances form a deposit of plaque on the inner lining ofarterial walls)
21. Thrombosis
Blood clots formed in a blood vessel. It is especially dangerous in the brain
or in the heart
http://www.youtube.com/watch?v=OxY4BphpGqo Thrombosis
22. Heart attack and angina
Arteries which carry blood to the cardiac cells
Angina: narrowing or partial obstruction of the coronary arteries.
Heart attack: total obstruction of the coronary arteries
