Diastole
|
|
Systole
|
|
Phase of
relaxation
|
- contraction of the atrium and relaxation of the ventricle
|
|
- contraction of the ven-
tricle and relaxation of the atrium
|
|
- relaxation of the whole
heart muscle
|
- increasing blood pressure opens the cuspid valves
|
|
- increasing blood pressure
closes the cusid valves
and opens the pocket
valves
|
|
- cuspid and pocket valves
are closed
|
- blood is pressed into ventricle
|
|
- blood is squeezed into
the pulmonary artery
|
|
- blood flows from the
vena cava superior and
inferior into the the atrium
on account of the low
blood pressure
|
