Human Anatomy Study Set 3
Quiz 22: Heart
Though the Autonomic Innervation by Autonomic Centers in the Brainstem
Though the autonomic innervation by autonomic centers in the brainstem cannot initiate a heartbeat,it can increase or decrease the heart rate.
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Parasympathetic innervation decreases the heart rate,but generally tends to have no effect on the force of contractions.
The right and left coronary arteries are the only branches of the ascending aorta.
All cardiac veins eventually drain into the coronary sinus for return of the blood from the myocardium to the right atrium.
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