Biology - Body Fluids and Circulation Question with Solution | TestHub
BiologyBody Fluids and CirculationHuman Circulatory SystemEasy2 minPYQ_2026
BiologyEasysingle choice
Semilunar valves remain open during ________.
Options:
Answer:
C
Solution:
During ventricular systole, the ventricles contract, causing the pressure within them to rise sharply. When the ventricular pressure exceeds the pressure in the aorta and pulmonary artery, the semilunar valves are forced open, allowing blood to be ejected from the heart.
During ventricular diastole, the ventricles relax, pressure falls, and the semilunar valves close to prevent the backflow of blood.
During atrial systole and diastole, the semilunar valves remain closed.
Answer: Ventricular systole
Stream:MHT_CET_MEDICALSubject:BiologyTopic:Body Fluids and CirculationSubtopic:Human Circulatory System
⏱ 2mℹ️ Source: PYQ_2026
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