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m6 Cardio

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

 



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