The rhythmic contraction of the heart, by which blood is driven through the arteries
There is no essential virtue in comfort. To be relaxed is good if it is part of a process of systole and diastole. Relaxation comes between phases of tenseness.
The part of the cardiac cycle when the ventricles are contracting Systole begins with the closing of the AV valves and ends with their opening Press the "back" button to return to where you came from
The contraction of the heart and arteries by which the blood is forced onward and the circulation kept up; also, the contraction of a rhythmically pulsating contractile vacuole; correlative to diastole
contraction of the heart, especially of the ventricles, by which the blood is driven through the aorta and pulmonary artery to traverse the systemic and pulmonary circulations, respectively