The most muscular chamber of the heart is the __________.
left ventricle
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thief
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5
10
15
20
25
fairy
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5
10
15
20
25
shark
Other team loses 20 points!
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baam
Lose 20 points!
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20
Which valve is most often faulty in the heart?
the mitral, or bicuspid, valve
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15
When the mitral valve closes, it prevents the backflow of blood from the __________.
left ventricle into the left atrium
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baam
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magnet
Take 20 points!
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rocket
Go to first place!
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banana
Go to last place!
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25
What is the correct sequence of electrical current flow through the heart wall?
SA node, AV node, AV bundle, right and left bundle branches, subendocardial conducting network
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15
What part of the heart is considered the systemic circuit pump?
the left ventricle
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lifesaver
Give 15 points!
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rocket
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gift
Win 10 points!
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banana
Go to last place!
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monster
Reset all scores!
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rocket
Go to first place!
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shark
Other team loses 25 points!
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banana
Go to last place!
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15
The normal pacemaker of the heart is the __________.
SA node
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20
The noncontractile cardiac muscle cells that initiate their own depolarization and cause depolarization of the rest of the heart are called __________.
pacemaker cells
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20
The structure just deep to the fibrous pericardium is the __________.
parietal layer of the serous pericardium
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25
The absolute refractory period refers to the time during which __________.
the muscle cell will not respond to a stimulus of any strength
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25
The role of the atrioventricular node (AV node) is to __________.
slow down impulses so that the atria can contract to fill the adjacent ventricles with blood
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15
The coronary arteries arise from the __________.
aorta
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15
Into which chamber of the heart do the pulmonary veins deliver blood?
