Examlex
The reactants of a reaction bind to an enzyme's ________, as does a ________ of the enzyme.
Precapillary Sphincter
A band of smooth muscle that regulates blood flow into the capillaries, largely controlling the microcirculation.
Action Potentials
Electrical impulses that travel along the membrane of a nerve or muscle fiber, initiating activity or movement.
Coronary Sinus
Short trunk that receives most of the veins of the heart and empties into the right atrium.
Cardiac Veins
Blood vessels that return deoxygenated blood from the myocardium (heart muscle) to the right atrium.
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