The Cardiac Cycle & the Pathway of Blood (Edexcel GCSE Physical Education): Flashcards
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Practise the cards
15 cards from this deck
What is the cardiac cycle?
What is the cardiac cycle?
Sequence of events during one heartbeat
What are the 2 main phases of cardiac cycle?
What are the 2 main phases of cardiac cycle?
Diastole and systole
What is diastole?
What is diastole?
Relaxation phase; atria & ventricles relaxed
Valve positions during diastole
Valve positions during diastole
AV valves open, semilunar valves closed
What is atrial systole?
What is atrial systole?
Atria contract, pushing blood into ventricles
Valve positions during ventricular systole
Valve positions during ventricular systole
AV valves close, semilunar valves open
Right ventricle function
Right ventricle function
Pumps deoxygenated blood to pulmonary artery
Left ventricle function
Left ventricle function
Pumps oxygenated blood to aorta
Where is the tricuspid valve?
Where is the tricuspid valve?
Between right atrium and right ventricle
Where is the bicuspid (mitral) valve?
Where is the bicuspid (mitral) valve?
Between left atrium and left ventricle
Pulmonary artery function
Pulmonary artery function
Carries deoxygenated blood to lungs
Pulmonary veins function
Pulmonary veins function
Returns oxygenated blood from lungs to left atrium
Aorta function
Aorta function
Distributes oxygenated blood to the body
Vena cava function
Vena cava function
Returns deoxygenated blood from body to right atrium
Effect of regular physical activity on heart
Effect of regular physical activity on heart
Improves efficiency & strength, enhances fitness