PSYCH261 Chapter Notes - Chapter 8: Buccino, Vestibular Nuclei, Globus Pallidus
11 Jun 2014
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Chapter 8 - control of movement. The ultimate function of the nervous system is control movement. Skeletal muscle - one of the striated muscles attached to bones. Skeletal muscles are the ones that move us (our skeletons) around and are responsible for our actions. Attached to our bones via tendons (strong bands of connective tissue) There are many different moves, two specific types are flexion and extension. E. g. dog puts paw down. Consists of two types of muscle fibers. Served by the alpha motor neurons. Central region (capsule) contains sensory endings that are sensitive to stretch applied to the muscle. Two types of intrafusal muscle fibers, one being; Myofibril - an element of muscle fibers that consists of overlapping strands of actin and myosin; responsible for muscular contractions. Actin - one of the proteins (with myosin) that provide the physical basis for muscular contraction. Striated muscle - skeletal muscle; muscle that contains striations. The physical basis of muscular contraction.
