Question

rearrange SAN, ventricular systole, AVN​

Answer 1

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The sinoatrial node (SAN) and the atrioventricular node (AVN) are

specialized tissues in the heart: the

SAN is specialized for pacemaking (it is the pacemaker of the heart), whereas the AVN is specialized for slow conduction of the action potential (to introduce a delay between atrial and ventricular activation during ...

During ventricular systole the ventricles are contracting and vigorously pulsing (or ejecting) two separated blood supplies from the heart—one to the lungs and one to all other body organs and systems—while the two atria are relaxed (atrial diastole).

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