During atrial systole, which valve is open?

During atrial systole, which valve is open?
  1. tricuspid valve
  2. bicuspid valve
  3. semilunar valve
  4. both tricuspid and bicuspid valves

Solution

During atrial systole, the tricuspid and bicuspid valves are open and blood flows into the left and right ventricle respectively through the left and right atria.

Asked in: NCERT

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