Health, 12.10.2020 08:01 potato3999
Deoxygenatedblood enters the heart from the superior and
inferior . It enters the first of four chambers,
called the . The top of the first chamber is home
of the heart’s natural pacemaker, the node. Blood then passes
through first of two atrioventricular valves called the valve into the
(chamber) during a momentary relaxed period of the cardiac
cycle called . From there, it passes through the
valve and enters the
artery. After becoming oxygenated in the
, blood returns via the veins and enters the
. Blood is squeezed downward through the second
atrioventricular valve called the valve where it enters the
. It is pumped during out
through the valve into the ascending aorta.
Answers: 1
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Deoxygenatedblood enters the heart from the superior and
inferior . It enters the first of four cha...
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