MCQ
(1) The rhythmical construction and relaxation of heart is called
(a) heart rate
(b) Heartbeat
(c) pulse
(d) pulse rate
Answers
Answered by
2
Answer:
The cardiac cycle refers to the alternating contraction and relaxation of the myocardium in the walls of the heart chambers, coordinated by the conduction system, during one heartbeat. Systole is the contraction phase of the cardiac cycle, and diastole is the relaxation phase.
Answered by
2
Answer:
the correct answer is heartbeat
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