ANAT & PHSIOLOGY II-MUSCLES-PHYSIOLOGY
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| surrounds each individual fiber | Endomysium
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| surrounds a group of fibers (fascicle) | Perimysium
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| surrounds an entire muscle, is continuous with tendon. | Epimysium
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| a short section of a myofibril, and is the smallest contractile unit of a muscle fiber | sarcomere
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| bundles of the contractile proteins actin & myosin | Myofilaments
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| repeating A & I bands along the myofibril | Striations
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| Types of Muscle Tissue: voluntarily controlled, attaches to skeleton | SKELETAL
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| Types of Muscle Tissue: involuntarily controlled, only in the heart | CARDIAC
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| Types of Muscle Tissue: Nonstriated, involuntarily controlled, lines internal passageways | SMOOTH
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| Muscle Functions | Body movement,Posture, body position Movement & storage of materials Heat generation
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| Composed of the protein myosin, Anchored by the M line of the sarcomere, do not move during contraction | Thick filaments
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| Thin filaments ARE Composed of the ______ _____ ______ | protein actin, tropomyosin, and troponin
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| Wraps around each myofibril, Stores calcium and releases it into the sarcoplasm when the muscle is stimulated by a motor neuron | Sarcoplasmic Reticulum
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| Passageways that penetrate into the interior of the muscle fiber.Conducts action potentials from the sarcolemma into the deepest parts of the muscle cell | T tubules
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