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Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBody Fluids and Circulation2 Marks
Question
Indicate the flow of blood in the heart during joint diastole. State whether the semilunar valves are open or closed during this phase.
✓

Answer

  • During joint diastole, blood enters the right atrium through superior and inferior vena cavae; blood also enters the left atrium through pulmonary veins.
  • 70% of the blood enters the ventricles from the respective atria, through the open atrio-ventricular valves.
  • The semilunar valves are closed during the joint diastole.

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