NEET Zoology Cardiac Cycle MCQ Question
Which of the following statements correctly describe the phases of the cardiac cycle?
During ventricular systole, the semilunar valves open as ventricular pressure increases.
Atrial pressure is higher than ventricular pressure during ventricular diastole.
The tricuspid and bicuspid valves close when the ventricles are relaxed.
Blood flows from the ventricles to the atria during ventricular systole.
Correct Answer
Detailed Explanation
During ventricular systole, the pressure in the ventricles increases, forcing the semilunar valves open to allow blood to flow into the pulmonary artery and aorta. Atrial pressure is lower than ventricular pressure during this phase, and the tricuspid and bicuspid valves remain open as the ventricles fill during diastole.
Found an issue with this question?
Related Questions
More from
Which of the following statements about blood composition is correct?
Which protein in blood plasma is primarily needed for the clotting or coagulation of blood?
What percentage of blood is composed of formed elements such as erythrocytes, leucocytes, and platelets?