The Cardiac Cycle & the Pathway of Blood (OCR 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 in the heart during one heartbeat
What are the two main phases of the cardiac cycle?
What are the two main phases of the cardiac cycle?
Diastole and systole
What happens during diastole?
What happens during diastole?
Relaxation phase - atria and ventricles are relaxed
Where does blood come from during diastole?
Where does blood come from during diastole?
Vena cava and pulmonary veins into atria
AV valve position during diastole
AV valve position during diastole
Open (allowing blood into ventricles)
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
Valve positions during ventricular systole
Valve positions during ventricular systole
AV valves close, semilunar valves open
What type of blood does the right ventricle pump?
What type of blood does the right ventricle pump?
Deoxygenated blood
Where does the right ventricle pump blood to?
Where does the right ventricle pump blood to?
Pulmonary artery towards the lungs
What type of blood does the left ventricle pump?
What type of blood does the left ventricle pump?
Oxygenated blood
Where does the left ventricle pump blood to?
Where does the left ventricle pump blood to?
Aorta towards the rest of the body
How does deoxygenated blood enter the heart?
How does deoxygenated blood enter the heart?
Vena cava into right atrium
How does oxygenated blood enter the heart?
How does oxygenated blood enter the heart?
Pulmonary veins into left atrium
Effect of regular physical activity on the heart
Effect of regular physical activity on the heart
Improves efficiency and strength of the heart