A) atria and ventricles
B) SA node
C) AV node
D) none of the above
Correct Answer: A
Solution :
Cardiac cycle : A single cardiac cycle represented by a single heart beat which include one systole and one diastole of auricle or ventricles, the duration of each cardiac cycle is of 1.6 seconds. Systole : In this phase of cardiac cycle contraction of atria and ventricles takes place. Diastole : In this phase of cardiac cycle relaxation of atria and ventricles takes place. SA node is present in the wall of right auricle and initiation of heart beat takes place by SA node.
You need to login to perform this action.
You will be redirected in
3 sec
