Question

What is joint diastole?

Answer 1

Cardiac cycle:

1. It is the sequence of events that take place within a single heartbeat.
2. It involves the heart muscle contracting and relaxing repeatedly.
3. Systole is the contraction (when blood is expelled from the heart).
4. Diastole is the relaxation (when the heart chambers are filled with blood).

Joint diastole:

1. When all four chambers of the heart are relaxed, it is considered to be in a condition of joint diastole.
2. During this procedure, deoxygenated blood from the superior and inner vena cava is sent to the right auricle, while oxygenated blood is delivered to the left auricle through the pulmonary vein from the lungs.
3. During joint diastole, atrioventricular valves (Bicuspid and Tricuspid valves) open to let blood to pass from the atria to the ventricles, while semilunar valves seal.
4. This procedure, known as the heart cycle that gets blood, takes only 0.4 seconds.