The Cardiac Cycle (AQA A-Level Biology): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Systole definition
Systole definition
Heart muscle contracts
Diastole definition
Diastole definition
Heart muscle relaxes
Cardiac cycle frequency at rest
Cardiac cycle frequency at rest
Approximately 70 times per minute
Cause of 'lub' heart sound
Cause of 'lub' heart sound
Atrioventricular valve closure
Cause of 'dub' heart sound
Cause of 'dub' heart sound
Semi-lunar valve closure
Cardiac output calculation
Cardiac output calculation
Atrial systole filling contribution
Atrial systole filling contribution
10-15% of ventricular filling
Left ventricle characteristic
Left ventricle characteristic
More muscular than right ventricle
Minimum aortic pressure
Minimum aortic pressure
Approximately 12 kPa
Three valve types in cardiovascular system
Three valve types in cardiovascular system
Atrioventricular, semi-lunar, pocket