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Where does the coronary sinus recieve blood from'?
Functions of the fibrous skeleton
The right atrium receives blood from the
D. left ventricle
E. pulmonary veins
The left ventricle receives blood through the
B.pulmonary semilunar valve
D.aortic semilunar valve
The left coronary artery supplies blood to the_____ region(s) of the heart
D.A and C are correct
E.B and C are correct
Low oxygen blood travels through the
E.both a and b are correct
The muscles that keep the AV valves from prolapsing are the
The pacemaker cells of the heart are in the
Ventricular muscle contraction begins at the
A.apex of the heart
B.base of the heart
The sympathetic nervous system affects
A.the rate of contraction
B.the force of contraction
C.the contractile muscle cells
D. the SA node
E. all of the above are correct
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