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Muscles

TermDefinition
Epimysium a sheath of fibrous elastic tissue surrounding a muscle.
Perimysium the sheath of connective tissue surrounding a bundle of muscle fibers.
Endomysium the delicate connective tissue surrounding the individual muscular fibers within the smallest bundles—compare epimysium
Tendon a flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone.
Muscle Fibers any of the elongated cells characteristic of muscle.
Myoblast a type of embryonic progenitor cell that differentiates to give rise to muscle cells.
Sarcoplasm the cytoplasm of striated muscle cells.
Transverse tubules a deep invagination of the sarcolemma, which is the plasma membrane of skeletal muscle and cardiac muscle cells
Action potential the change in electrical potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell.
Myofilaments the filaments of myofibrils constructed from proteins
Thin filaments Definition of THIN FILAMENT. : a myofilament of the one of the two types making up myofibrils that is about 5 nanometers (50 angstroms) in width and is composed chiefly of the protein actin—compare thick filament.
Thick filaments THICK FILAMENT. : a myofilament of one of the two types making up myofibrils that is 10 to 12 nanometers (100 to 120 angstroms) in width and is composed of the protein myosin—compare thin filament.
Sarcoplasmic reticulum 1. a group or set of three connected people or things.
Triad The
Cristernae
Sarcomeres
Myofibrils
Striated
Troponin
Tropomyosin
Active site
Actin
Myosin
Neuromuscular sanction
Sarcolemma
Created by: Janie015
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