Question

The cardiac cycle is the sequence of events that occurs when the heart beats. In the (i)______, the heart ventricles (ii)______ and fill the heart with blood. In the (iii)_______ the ventricles (iv)________and pump the blood to the body through the arteries.

• A. (i) diastole phase, (ii) relax, (iii) systole phase, (iv) contract
• B. (i) systole phase, (ii) contract, (iii) diastole phase, (iv) relax
• C. (i) diastole phase, (ii) contract, (iii) systole phase, (iv) relax
• D. (i) systole phase, (ii) relax, (iii) diastole phase, (iv) contract

Answer 1

The correct option is A

(i) diastole phase, (ii) relax, (iii) systole phase, (iv) contract

The cardiac cycle is the sequence of events that occurs when the heart beats. In the diastole phase, the heart ventricles relax and help fill the heart with blood. In the systole, the ventricles contract and pump the blood to the body through the arteries. The ventricular systole and diastole, are considered to be the systole and diastole of the heart beat.