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Muscular System Ch. 8 Vocabulary

Courtney Steadman

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1.the site of functional apposition between neurons, where an impulse is transmitted from one to another, usually by a chemical neurotransmitter released by the axon terminal of the presynaptic neuron.
3.One of the segments into which a fibril of striated muscle is divided.
7.A sheet or band of fibrous connective tissue enveloping, separating, or binding together muscles, organs, and other soft structures of the body.
9.The commonest protein in muscle cells, responsible for the elastic and contractile properties of muscle. It combines with actin to form actomyosin.
12.a protein forming the thin filaments in muscle fibers that are pulled on by myosin cross-bridges to cause a muscle contraction.
13.mechanism proposed for muscle contraction where myosin head groups of the thick filaments move along the interdigitated actin of the thin filaments, sliding past them and thereby shortening the sarcomere.
14.the oxygen that must be used in the oxidative energy processes after strenuous exercise to reconvert lactic acid to glucose and decomposed ATP and creatine phosphate to their original states.
2.The site at which nerve impulses are transmitted to muscles.
4.an enzyme that increases in blood levels when muscle damage has occurred, as in pseudohypertrophic muscular dystrophy.
5.a sudden pushing force in a muscle.
6.A neuron that conveys impulses from the central nervous system to a muscle, gland, or other effector tissue.
8.A white crystalline derivative of choline that is released at the ends of nerve fibers in the somatic and parasympathetic nervous systems and is involved in the transmission of nerve impulses in the body.
10.a functional structure consisting of a motor neuron and the muscle fibers it innervates.
11.a slender striated strand within skeletal and cardiac muscle fibers and composed of bundles of myofilaments.

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