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The Heart2

The two upper chambers of the heart atria
carries blood from the lower body inferior vena cava
carries blood from the head and upper extremities superior vena cava
largest vein that drains the heeart coronary sinus
the right and left rides of the heart are sepreated by an internal call of connective tissue septum
seperates the right and left atria interatrial septum
two lower chambers of the heart ventricules
where is the base of the heart top of the heart
encircles the outside of the heart and seperates the atria from the venticles sulci
when the left heart is to recieve oxygenated blood and pump it out to the rest of the body systematic circulation
the right side of the heart is to pump unoxygenated blood to pulmonary circulation
which part of the heart is a high pressure pump? left side
addictional contribution of 30% blood resulting from atrial contraction Atrial kick
the amount of blood ejected from the venticle with each heartbeat. stroke volume
the percent of blood pumped out of a heart chamber with each contraction. normal is 50% ejection fraction
is a thin smooth layer of epithelium and connective tissue that lines the hearts inner chamber valves, chordae tendineae, and papillary muscles. Endocardium
is a thick layer that consists of cardiac muscle fibers (cells) responsible for the pumping action of the heart myocardium
is a double-walled sac that encloses the heart and helps protect it from trauma and infection pericardium
life threatening condidtion cardiac tamponade
a procedure in which a needle is inserted into the pericardial space and the excess fluid is sucked out (aspirated) through the needle pericardiocentesis
a membrane that covers smooth, stirated, and cardiac muscles sarcolema
energy -producing elements of a cell mitochondria
substances in intracardiac cells pass through broken cell membranes and leak into the blood stream MI (myocardial infraction_
cardiac markers tropin, creatine kinase, and myoglobin
seperate the atria from the ventricles antriventricular valves
has two cusps, it lies between the left atrium and left venticle mitral valves
is the av valve that lies between the right strium and right ventricle (3 seperate cusps or flaps) tricuspid valve
are thin strands of connective tissues chordae tendinae
they are the pulmonic and aortic valves, that prevent back flow of blood from the aorta and pulmonary arteries into the ventricles semilunar valves (sl)
if a valve narrows, stiffens or thckens, the valve is said to be stenosed. the heart must work harder to pump blood through the stenosed valve valvular stenosis
if a valve flap inverts it is said to prolaps valvular prolapse
when does a heart sound occur? because of vibrations in the tissues of the heart caused by the closing of the heats valve
what are normal heart sounds called? s1 and s2
name the 1st heart sound "lubb"
name the 2nd heart sound "dubb"
what is an abnormal heart sound called?
Created by: Tinkerbell_xoxo