A&P
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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What is the heart's innermost layer and therefore comes into direct contact with circulating blood? | Endocardium
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What is the heart's outermost layer? | Pericardium
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What is the thickest part of the heart? | Myocardium
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What structure allows blood to flow from the left atrium into the left ventricle? | Mitral valve (also known as Bicuspid Valve)
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What structure allows blood to flow from the right atrium into the right ventricle? | Tricuspid valve
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What structure allows blood to flow out of the the left ventricle into the aorta? | Aortic valve
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What is the largest artery in the body? | Aorta
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The superior vena cava empties into what? | Right atrium
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The inferior vena cava empties where? | Right atrium
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What structure returns oxygenated blood to the heart? | Pulmonary veins
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Through what structure is blood pumped into lungs? | Pulmonary artery
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Which part of the heart does most of the work? | Left ventricle-so the walls are the thickest!
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How doe the heart get its own blood supply? | Right and Left Coronary Arteries
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What structures branch off of the ascending aorta? | Coronary arteries
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What is the main function of heart valves? | Keep blood from flowing backwards
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How long is a normal heart beat? | 0.8 seconds: 0.4 seconds to contract and 0.4 seconds to relax.
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When reading an EKG, what represents atrial depolarization? | P wave
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On EKG, what represents ventricular depolarization? | QRS complex
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On EKG, what represents ventricular repolarization? | T wave
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