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23 Cards in this Set
- Front
- Back
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What 3 layers does the heart wall consist of?
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epicardium
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What is the outermost heart layer?
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epicardium
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what is the epicardium also known as?
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visceral layer of the serous pericardium
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What layer of the heart becomes thick and fattier?
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epicardium
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What is the middle layer of the heart wall called?
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myocardium
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What layer of the heart wall is the thickest?
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myocardium
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What is the myocardium?
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The thickest of the 3 layers of the wall of the heart (in the middle)
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Where do heart attacks occur?
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in the myocardial layer of the heart
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The internal surface of the heart and the external surfaces of the heart valves are covered by what?
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endocardium
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What is the endocardium contiguous with, and what is it?
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endothelium, the inner lining of the blood vessels
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What is the inner lining of the blood vessels called?
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endothelium
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How many hollow chambers is the heart composed of?
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four
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What are all the hollow chambers of the heart?
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atrea and ventricles
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What are thin-walled chambers of the heart that are located superiorly?
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atria
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What is at the anterior part of each atrium?
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Auricle
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where are the auricles of the heart located?
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anterior part of each atrium
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The atria receive blood returning to the heart through which circuits?
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both: the right receives blood from the systemic circuit, the left receives blood from the pulmonary circuit
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Blood that enters an atrium is passed to the ventricle on which side of the heart?
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Same side
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The right atrium receives blood from which circuit?
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systemic circuit (from the left side of the heart)
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What are the inferior chambers of the heart?
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The ventricles
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what 2 large arteries exit the heart at the basal surface?
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The pulmonary trunk and the aorta
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Blood that passes through the pulmonary trunk goes to which circuit?
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Pulmonary circuit
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The aorta, which conducts blood from where to where
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left ventricle into the systemic circuit
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