These cells are lighter in color and are useful for

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Unformatted text preview: , but make better use of glycolysis to operate in low oxygen conditions. These cells are lighter in color, and are useful for activities requiring a burst of energy, such as sprinting or weight lifting. “White meat” on a turkey. • The nervous system controls contraction of muscles through specialized neuromuscular junctions that form a motor unit. • Exercise increases the amount of actin and myosin within muscle cells, but does not increase the actual number of muscle cells. • Skeletons in the animal kingdom are of several types: • Hydrostatic skeleton: Earthworms rely on water pressure inside of their bodies to provide support. • Exoskeletons: non-living material that encase the body of an organism. Found primarily in the arthropods. • Endoskeletons: fo...
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