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what is contained in the openings between the atria and ventricles?
folds of connective tissue covered by endocardium, these valves maintain a one-way flow of blood
superior and inferior vena cava
two great veins in the systemic circuit through which the right atrium receives blood
an opening that is formed during embryonic development and penetrates the interatrial septum
where does blood leaving the right atrium flow?
into the right ventricle through the atrioventricular (AV) valve
contents of atrioventricular valve
three cusps of fibrous tissue braced by the tendinous chordae tendineae that are connected to papillary muscles
where does blood leaving left atrium flow?
into the left ventricle through the left atrioventricular (AV) valve
what is the largest and thickest of the four chambers? and why?
the left ventricle because it must pump blood to the entire body
what is the path of blood leaving the left ventricle?
passes through the aortic valve into the systemic circuit via the ascending aorta, through the aortic arch and into the descending aorta
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