BIO 169 Muscles-PHYS Word Scramble
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Question | Answer |
surrounds each individual fiber | Endomysium |
surrounds a group of fibers (fascicle) | Perimysium |
surrounds an entire muscle, is continuous with tendon. | Epimysium |
a short section of a myofibril, and is the smallest contractile unit of a muscle fiber | sarcomere |
bundles of the contractile proteins actin & myosin | Myofilaments |
repeating A & I bands along the myofibril | Striations |
Types of Muscle Tissue: voluntarily controlled, attaches to skeleton | SKELETAL |
Types of Muscle Tissue: involuntarily controlled, only in the heart | CARDIAC |
Types of Muscle Tissue: Nonstriated, involuntarily controlled, lines internal passageways | SMOOTH |
Muscle Functions | Body movement,Posture, body position Movement & storage of materials Heat generation |
Composed of the protein myosin, Anchored by the M line of the sarcomere, do not move during contraction | Thick filaments |
Thin filaments ARE Composed of the ______ _____ ______ | protein actin, tropomyosin, and troponin |
Wraps around each myofibril, Stores calcium and releases it into the sarcoplasm when the muscle is stimulated by a motor neuron | Sarcoplasmic Reticulum |
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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