THE HEART AND ITS FOUR CHAMBERS:
Автор: QAMAR INTERNATIONAL COLLEGE
Загружено: 2024-11-04
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THE HEART AND ITS FOUR CHAMBERS:
The heart has four chambers: the right and left atria, and the right and left ventricles:
Atria: The two upper chambers that collect blood from the body and lungs
Ventricles: The two lower chambers that pump blood out of the heart to the lungs and other parts of the body
The heart also has a septum, a wall of tissue that divides the right and left sides of the heart. Each chamber has a valve that keeps blood flowing in one direction.
Blood flows through the heart in this order:
1. Right atrium
Blood enters the heart from the body and lungs and flows into the right atrium
2. Right ventricle
Blood passes through the right ventricle and is pumped to the lungs
3. Left atrium
Oxygenated blood returns to the heart through the pulmonary veins and enters the left atrium
4. Left ventricle
Blood flows from the left atrium into the left ventricle and is pumped out to the body through the aorta
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