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AV valves are supported by...

AV valves are supported by ________

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**Step-by-Step Solution:** 1. **Understanding AV Valves**: The question refers to the atrioventricular (AV) valves, which are located between the atria and ventricles of the heart. There are two main AV valves: the tricuspid valve (right side) and the mitral valve (left side). 2. **Identifying Support Structures**: The AV valves need support to function properly and prevent backflow of blood when the heart contracts. 3. **Chordae Tendineae**: The primary structure that supports the AV valves is known as the chordae tendineae. These are thin, fibrous cords that connect the AV valves to the papillary muscles. ...
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