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Four valves allow blood to flow in one direction
Two sets
- Atrioventricular valves
- Semilunar valves
Atrioventricular Valves
- Located between atria and the ventricles
- Allows flow from atria into ventricles
- Prevents flow backward from ventricles
Tricuspid valve
- Three cusps
- Located between right atrium and right ventricle
Mitral (bicuspid) valve
- Two cusps
- Located between left atrium and left ventricle
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