The tendinous cords in the ventricles help close the atrioventricular valves when the ventricles contract. The cords connect the valve leaflets to the ventricle muscle walls and pull the leaflets closed as the ventricles contract, preventing backflow of blood into the atria.

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What is the function of the tendinous cords in the ventricles?
r le ve
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e
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Name of the artery that carries oxygen to heart muscle
he rcu
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What is a closed circulatory system?
art
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2. sem s
va lve
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Pumps blood to whole body not
just to lungs
r
ar ic ula
atria and ventricles relax
v ntr
blood trickles into atria
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What type of circulatory system do fish have?
een
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the ies?
deoxygenated
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Which order do heart chambers contract?
o tem
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What type of circulatory system do mammals have?
of stem
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What happens to the volume of the heart
a circulatory system?
Three factors that determine need for
ain lum x yg
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ha
t ri e
he re ic h
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Part of ECG that represents ventricular systole
rgy dt
Which ventricle has the thickest wall?
e de o lu
in diastole
en ng
ses
Tw o s to
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t rel av e a pic
k
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tri urr ber
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Oxygenated
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