CIRCULATORY SYSTEM
, HEART VALVES :
Valves ensure blood flow in one direction through the heart.
1. Atrioventricular valves (AV valves) – found between the atria and the ventricles
– Tricuspid valve (3 flaps)
– Bicuspid valve (mitral) (2 flaps)
2. Semilunar valves – found at the base of the blood vessels leaving the heart.
– Pulmonary
– Aortic Semilunar valves
CARDIAC CYCLE :
Changes taking place in heart during one heartbeat (0.8 sec)
• Systole - cardiac muscle contracting
• Diastole - cardiac muscles relaxing
, HEART VALVES :
Valves ensure blood flow in one direction through the heart.
1. Atrioventricular valves (AV valves) – found between the atria and the ventricles
– Tricuspid valve (3 flaps)
– Bicuspid valve (mitral) (2 flaps)
2. Semilunar valves – found at the base of the blood vessels leaving the heart.
– Pulmonary
– Aortic Semilunar valves
CARDIAC CYCLE :
Changes taking place in heart during one heartbeat (0.8 sec)
• Systole - cardiac muscle contracting
• Diastole - cardiac muscles relaxing
