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ch 13 vocab.

Musce Contraction

QuestionAnswer
neurotransmitter that initiates a muscle contraction acetylcholine
shortening of the length of all the muscle fibers and out of the muscle itself. it is the opposite of relaxation contraction
a bundle composed of many muscle fibers. it is surrounded by fascia. many fascicles grouped together from a muscle fascicle
an increase in the size of a muscle hypertrophy
one muscle cell. so named because it stretches over a long distance muscle fiber
section of a muscle fiber that contains thin strands (actin) and thick strands (myosin) that give it its characteristic striated appearance under a microscope myofibril
area on a single muscle fiber where a nerve cell connects to it neuromuscular junction
chemical messenger between a nerve cell and a muscle fiber neurotransmitter
Created by: ricrom81
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