The Heart (AQA GCSE Biology): Flashcards
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Practise the cards
15 cards from this deck
Heart's function in circulatory system
Heart's function in circulatory system
Pumps blood in double circulatory system
Vessel bringing deoxygenated blood to right atrium
Vessel bringing deoxygenated blood to right atrium
Vena cava
Vessel bringing oxygenated blood to left atrium
Vessel bringing oxygenated blood to left atrium
Pulmonary vein
Vessel taking blood from right ventricle to lungs
Vessel taking blood from right ventricle to lungs
Pulmonary artery
Vessel taking oxygenated blood from left ventricle to body
Vessel taking oxygenated blood from left ventricle to body
Aorta
Number of chambers in the heart
Number of chambers in the heart
Four (two atria and two ventricles)
Why is left ventricle wall thicker than right?
Why is left ventricle wall thicker than right?
Pumps blood to entire body, not just lungs
Function of heart valves
Function of heart valves
Prevent blood from flowing backwards
Function of coronary arteries
Function of coronary arteries
Supply heart muscle with oxygenated blood
Natural resting heart rate (beats per minute)
Natural resting heart rate (beats per minute)
Around 70
Location of natural pacemaker cells
Location of natural pacemaker cells
Right atrium
Direction arteries carry blood
Direction arteries carry blood
Away from the heart
Direction veins carry blood
Direction veins carry blood
Towards the heart
Thickness of capillary walls
Thickness of capillary walls
One cell thick
Where does gaseous exchange occur in pulmonary circuit?
Where does gaseous exchange occur in pulmonary circuit?
In the lungs