The valve between the right atrium and the right ventricle is the
Correct answer: A. tricuspid valve
- A. tricuspid valve
- B. bicuspid valve
- C. aortic semilunar valve
- D. pulmonary semilunar valve
Explanation
The right atrioventricular valve has three flaps and is therefore called tricuspid, while the left one has two and is called bicuspid or mitral. Both are held by chordae tendineae attached to papillary muscles, which stop them turning inside out when the ventricle contracts. The semilunar valves guard the exits into the pulmonary artery and the aorta, not the openings between chambers.
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The human heart is a four chambered muscular pump that maintains double circulation through the pulmonary and systemic circuits. Questions cover atria, ventricles, valves, major blood vessels, the cardiac cycle, pressure changes, the conduction system and ECG, while distinguishing arteries and veins from the chambers that receive or eject blood.
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