The Cardiac Cycle & the Pathway of Blood (AQA GCSE Physical Education): Flashcards
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Cardiac cycle definition
Cardiac cycle definition
Sequence of events in heart during one heartbeat
Two main phases of cardiac cycle
Two main phases of cardiac cycle
Diastole and systole
What is diastole?
What is diastole?
Relaxation phase; atria & ventricles relaxed
AV valve position during diastole
AV valve position during diastole
Open
Semilunar valve position during diastole
Semilunar valve position during diastole
Closed
What happens during atrial systole?
What happens during atrial systole?
Atria contract, pushing blood into ventricles
Valves during ventricular systole
Valves during ventricular systole
AV valves close, semilunar valves open
Right ventricle pumps what blood where?
Right ventricle pumps what blood where?
Deoxygenated blood to pulmonary artery
Left ventricle pumps what blood where?
Left ventricle pumps what blood where?
Oxygenated blood to aorta
Where does deoxygenated blood enter the heart?
Where does deoxygenated blood enter the heart?
Right atrium via vena cava
Valve between right atrium & right ventricle
Valve between right atrium & right ventricle
Tricuspid valve
Where does blood go from right ventricle?
Where does blood go from right ventricle?
Pulmonary artery to lungs
Where does oxygenated blood enter the heart?
Where does oxygenated blood enter the heart?
Left atrium via pulmonary veins
Valve between left atrium & left ventricle
Valve between left atrium & left ventricle
Bicuspid (mitral) valve
Where does blood go from left ventricle?
Where does blood go from left ventricle?
Aorta to rest of body