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19 Cards in this Set
- Front
- Back
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the heart is located between the lungs in an area known as the
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mediastinum
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name the outer (superficial) layer of the pericardium
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fibrous pericardium
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What is the innermost layer of the heart wall called?
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endocardium
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Name the depression between the two ventricles seen on the anterior surface of the heart
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interventricular sulcus
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Are auricles extensions of the atria or the ventricles?
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atria
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What three vessels take blood to the right atrium?
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superior venacava, inferior venacava, coronary sinus
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Where do the great cardiac vein and the small cardiac vein take blood?
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to the coronary sinus
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Is the apex of the heart superior or inferior to other parts of the heart?
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inferior
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What blood vessels nourish the heart tissue?
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coronary arteries
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What structure separates the left atrium from the right atrium?
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interartrial septum
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The bicuspid valve is located between what two chambers of the heart?
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left atrium and left ventricle
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What is the function of the aortic semilunar valve?
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prevent blood from returning to the left ventricle
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Name the strucutre found between the atrioventricular valave and the apillary muslce
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cordae tendinai
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What is another name for the tricuspid valve?
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right AV valve
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What is the the cell type that makes up most of the myocardium?
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Myocytes
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The walls of the left ventricle are thicker than those of the right ventricle. What explanation can you give for this?
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Left ventricle has to pump blood to the entire body, right only to the lungs
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How does cardiac muscle resemble skeletal muscle?
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striated, contractile
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In terms of function, how is cardiac muscle different from skeletal muscle?
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The cells aren't individually innervated and heart muscle is involuntary
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What is the function of the semilunar valves?
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keep the blood from flowing back into the ventricles
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