Human Physiology and Pathology: Operation of valves
- Created by: jessica
- Created on: 27-02-13 07:27
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- Operation of AV valve
- Blood returning to the heart fills atria
- pressure against atrioventricular valves
- valves forced open
- ventricle fills while AV valves hang limply to the side
- Atria contract forcing additional blood into the ventricles
- Ventricles contract forcing blood against the AV cusps
- AV valves close
- Chordae tendineae tighten, prevents valve flaps from everting into atria
- AV valves close
- Ventricles contract forcing blood against the AV cusps
- Atria contract forcing additional blood into the ventricles
- ventricle fills while AV valves hang limply to the side
- valves forced open
- pressure against atrioventricular valves
- Blood returning to the heart fills atria
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