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Cardiovascular System

6 out of 6

During the cardiac cycle the opening of the aortic valve takes place at the:

A Beginning of systole

B End of isovolumeric contraction

C End of diastole

D End of diastasis

Ans. B End of isovolumeric contraction

At the end of isovolumetric contraction, aortic and pulmonary valves open

Aortic and pulmonary valve close

Isovolumid or Isomeric relaxation

Mitral and tricuspid valve open

Events of the cardiac cycle at a heart rate of 75 beats/min. the phases of the cardiac cycle identified by the numbers at the bottom are as follows. 1. atrial systole: 2. Isovolumetric ventricular contractions; 3. Ventricular ejection; 4. Isovolumetric ventricular relaxation 5. Ventricular filling.