Question

What is cardiac cycle

Answer 1

The cardiac cycle refers to a complete heartbeat from its generation to the beginning of the next beat, and so includes the diastole, the systole, and the intervening pause. The frequency of the cardiac cycle is described by the heart rate, which is typically expressed as beats per minute.

Answer 2

Hey !!

CARDIAC CYCLE

• The study of structure and functioning of heart is called as cardiology.
• Heart constantly contracts or relaxes, due to which transportation of blood occurs in the whole body.
• Cardiac cycle is the event, during which one heartbeat or one cycle of systole and diastole of cardiac muscle occurs.
• Cardiac cycle consists of systole and diastole of atria and ventricles.
• The cardiac impulse starts from SA node, than $via$ a conducting system, this impulse is conducted to all parts of heart.
• SA node is called as the pacemaker of heart.
• Rate of heartbeat in humans is 72-75 per minute.
• One cardiac cycle takes 0.8 seconds.

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