m6 Cardio
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| Diastole | phase of a cardiac cycle when a heart chamber wall relaxes
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| cardiac output | amount of bllood per minute pumped by the heart
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| Endocardium | inner lining of heart chambers
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| Epicardium | outside of pericardium. on surface of heart
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| ischemia | deficiency of blood to a body part.
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| mitral valve(bicuspid) | between left atrium and left ventricle.
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| myocardium | heart muscle tissue
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| systole | phase of cardiac cycle when a heart chamber wall contracts.
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| Epicardium | outer layer of the heart that reduces friction from surrounding organs
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| Endocardium | covers heart valves and lines heart chambers.
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| Cardiac Veins | parallel to coronary arteries. Drain into coronary sinus. Empties into right atrium. Located on posterior side of heart.
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| 3 layers of heart blood vessels | tunica intima(endothelium), Tunica media, and tunica externa
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| Tunica media | middle layer of heart blood vessel. Thickest layer in arteries.
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| Tunica externa | Outer layer of heart blood vessel. This is the thickest layer in a vein.
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| Portal circulation | carries blood drained from the stomach, intestines, and spleen to the liver.
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| P-Wave | atria depolarization. Sa-nod spreads impulse
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| QRS Complex | ventricular depolarization. Atria repolarization.
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| T-Wave | Ventricular repolarization.
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| Parasympathetic nerve impulses(in relation to heart rate) | causes heart rate to slow down.
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| sympathetic nerve impulses(in relation to heart rate) | causes heart rate to speed up.
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| High levels of serum potassium(K+)(in relation to cardiac cycle) | causes the heart to be excitable
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| Calcium(Ca2+) (in relation to cardiac cycle) | important to cardiac muscle contraction. If too much is present, prolonged contractions. Too little, heart becomes weak.
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| First heart sound(s1 or LUB) | Caused by the closure of the atrioventrical valves.
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| Second heart sound(s2 or DUB) | caused by the closure of the semilunar valves
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Created by:
paulgrant
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