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ISSA Bodybuilding Week 1-A Exam 2025 Questions and Answers Muscle - ....ANSWER ...-A group of motor units physically seperated by a membrane from other groups of motor units Smooth muscle - ....ANSWER ...-Governed by the autonomic nervous system and includes the muscles that line the digestive tract and protect blood vessels Cardiac muscle - ....ANSWER ...-Which includes the heart, as smooth muscle is modulated by the autonomic nervous syste Skeletal muscle - ....ANSWER ...-Blends tendinous insertions that attach to bones pulling on them, which generates desired movement Motor unit - ....ANSWER ...-Consists of a single neuron and all the muscle fibers innervated by it Myofibrils - ....ANSWER ...-Small bundles of myofilaments Myofilaments - ....ANSWER ...-The elements of the muscle that shorten upon contraction Myosin - ....ANSWER Actin - ....ANSWER ...-Short thick filaments that make up part of myofilaments ...-Long thin filaments that make up part of myofilaments …FOR STUDENTS ONLY…©️2025 ALL RIGHTS RESERVED… 1