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20 Cards in this Set
- Front
- Back
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2 Functions of the heart:
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1. transport oxygen, hormones, and nutrients to the body
2. remove CO2 and wastes |
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The SA node causes _______ to contract
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atrium
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The AV node causes __________ to contract
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ventricle
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A heart is a ________ organ that beats ___ times per minute.
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muscular, 72
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A tough saclike membrane called the _______ surrounds the heart and secretes a _____ that reduces _______ as the heart beats
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pericardium, fluid, friction
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THe ________ divides the heart in half and seoerates the ________ blood from the _____ blood.
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septum, oxygenated, deoxygenated
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Te function of valves in the heart is to prevent _______________
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blood from flowing backwards from atria to ventricle
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What are the two types of valves?
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atroventricular, semilunar
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What are the two atroventricular valve?
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triscupid, bicuspid (mitral)
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What is another word for the bicuspid valve?
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mitral valve
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The __________ valve is the AV valve on the right side
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tricuspid
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The _______ valve is the AV valve on the left side.
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bicuspid
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The _______ valve is the semilunar valve on the right.
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pulmonary
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The _______ valve the semilunar on the left
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aortic
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____________ are heart muscle cells that initiate their electrical impulse and contract
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S-A node sinoatrial node
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A _________ regulates contractions of the heart.
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pacemaker
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What is the name of the minor node that helps the ventricle contract.
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atroventricular node
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_______ - blood pressure when ventricels contract
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systole
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_________ - blood pressure when ventricles relax, allowing blood pressure to close SL valves
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Diastole
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How do you write blood pressure?
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systole over diastole
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