HE201 Study Guide - Final Guide: As Blood Flows, Circulatory System, Blood Vessel
Document Summary
Function of the heart is to pump blood: to the organs to provide nutrients and to eliminate waste, to the lungs to exchange gas. Transport of substance: oxygen and nutrients to cells, wastes from cells to liver and kidney, hormones, immune cells, and clotting proteins to specific target cells. Blood travels in a circular pattern through a system of blood vessels: heart various organs heart: this system of blood vessels is called the vasculature. As blood flows away from the heart, the blood vessels branch repeatedly, becoming numerous and smaller in diameter. Arteries: relatively large, branching vessels that conduct blood away from the heart. Arterioles: small branching vessels with high resistance; carry blood capillaries. Capillaries smallest blood vessels, site of exchange between blood and tissue. Veins relatively large converging vessels that conduct blood to the heart. Is a muscular organ whose function is to generate the force that propels blood through the blood vessels.
