The Heart
- Created by: sophieamyx
- Created on: 22-06-17 14:09
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- The Heart
- Structure
- Internal
- Left ventricle wall is thicker than the right ventricle wall.
- Atria walls are thinner than the ventricle walls
- External
- 4 main vessels attached to outside
- Left and right atria, left and right ventricles and the coronory arteries.
- Internal
- Heart pumps deoxygenated blood to the lungs.
- Heart pumps oxygenated blood to the rest of the body
- Two muscular pumps
- Roles
- Left ventricle
- Thicker, more muscular
- Needs to contract powerfully in order to pump blood all around the body
- Ventricles
- Thicker walls than atria
- Pushes blood out of the heart
- Atria
- Pushes blood to ventricles
- AV Valves
- Link atria to ventricles
- Stop blood flowing back into the atria when vesicles contract
- Cords
- Attach AV Valves to the ventricles
- SL Valves
- Link ventricles to pulmonary artery and aorta/
- Stops blood flowing back into the heart after ventricles contract
- Left ventricle
- Structure
- Right Side
- Left Side
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