![]() The circulatory system is effectively a network of cylindrical vessels: the arteries, veins, and capillaries that emanate from a pump, the heart. Simple diffusion allows some water, nutrient, waste, and gas exchange in animals that are only a few cell layers thick however, bulk flow is the only method by which the entire body of larger, more complex organisms is accessed. The circulatory system is the primary method used to transport nutrients and gases through the body. ![]() The information below was adapted from OpenStax Biology 40.1 Describe the process of gas, nutrient, and fluid exchange between capillaries and tissues.Describe and identify the functions of the different components of blood. ![]()
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