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The cardiovascular centers in the medulla oblongata control __________.
consist of smooth muscle cells that encircle the beginning of each capillary
The layer of a blood vessel that is dominated by smooth muscle cells is called the __________.
Arterial blood flow rises and falls during the cardiac cycle because
arterial pressure rises and falls
Elevated capillary hydrostatic pressure
forces more fluid across the endothelium
Since blood flows from high pressure to low pressure
a continuous drop in pressure is necessary to keep the blood moving
Blood pressure continuously drops as blood flows through the systemic circulation
tunica media of an artery consists of
smooth muscle with scattered elastic fibers