Cardiac cycle Flashcards
1
Q
Systole
A
pumping phase
Herat muscle contracts
2
Q
Diastole
A
Filling phase
Heart muscle relaxes
3
Q
Atrial systole
A
0-0.1 seconds Atria pumps blood into ventricle Tricuspid and bicuspid valve= open Semilunar Valves= closed Ventricles= relaxed and in diastole
4
Q
Ventricular Systole
A
0.2-0.4 Ventricles pump blood into arteries Tricuspid and bicuspid valves= closed Semilunar valves= open Atria= relaxed and in diastole
5
Q
Atrial and Ventricular Diastole
A
0.4-0.8 seconds
Both the atria and ventricles are relaxed and filling with blood
The tricuspid and bicuspid valves= open
Semilunar vales= closed
6
Q
What is the cardiac cycle
A
Heart beat
Sequence of events that occur in one full beat of the heart
0.8 seconds
Approx 72 beats a minutes
