striated muscle


striated muscle
striated muscle n muscle tissue that is marked by transverse dark and light bands, that is made up of elongated fibers, and that includes skeletal and usu. cardiac muscle of vertebrates and most muscle of arthropods compare SMOOTH MUSCLE, VOLUNTARY MUSCLE

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a tissue comprising the bulk of the body's musculature. It is also known as skeletal muscle, because it is attached to the skeleton and is responsible for the movement of bones, and voluntary muscle, because it is under voluntary control. Striated muscle is composed of parallel bundles of multinucleate fibres (each containing many myofibrils), which reveal cross-banding when viewed under the microscope. This effect is caused by the alternation of actin and myosin protein filaments within each myofibril. According to the 'sliding filament' theory, when muscle contraction takes place, the two sets of filaments slide past each other, so reducing the length of each unit (sarcomere) of the myofibril. The sliding is caused by a series of cyclic reactions, requiring ATP, resulting in a change in orientation of projections on the myosin filaments; each projection is first attached to an actin filament but contracts and releases it to become reattached at a different site.

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striped muscle a muscle whose fibers are divided by transverse bands into striations, including cardiac and skeletal muscle; the term is often used as a synonym for skeletal muscle. See muscle and see Plate 32.

Medical dictionary. 2011.

Look at other dictionaries:

  • Striated muscle — is a form of fibres that are combined into parallel fibres. More specifically, it can refer to: * Skeletal muscle * Cardiac muscleIn practice, the term striated muscle is sometimes used to refer exclusively to skeletal muscle when distinguishing… …   Wikipedia

  • striated muscle — noun a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes • Syn: ↑skeletal muscle • Hypernyms: ↑muscle, ↑musculus • Hyponyms: ↑voluntary muscle, ↑ …   Useful english dictionary

  • striated muscle — ▪ anatomy also called  voluntary muscle,  striped muscle , or  skeletal muscle    most common of the three types of muscle in the body. Striated muscle is attached to bone and produces all the movements of body parts in relation to each other;… …   Universalium

  • striated muscle — a tissue comprising the bulk of the body s musculature. It is also known as skeletal muscle, because it is attached to the skeleton and is responsible for the movement of bones, and voluntary muscle, because it is under voluntary control.… …   The new mediacal dictionary

  • striated muscle — Muscle in which the repeating units (sarcomeres) of the contractile myofibrils are arranged in register throughout the cell, resulting in transverse or oblique striations observable at the level of the light microscope, eg. the voluntary… …   Dictionary of molecular biology

  • striated muscle — noun Date: 1866 muscle tissue that is marked by transverse dark and light bands, is made up of elongated usually multinucleated fibers, and includes skeletal muscle, cardiac muscle, and most muscle of arthropods compare smooth muscle, voluntary… …   New Collegiate Dictionary

  • striated muscle — noun Physiology muscle tissue in which the contractile fibrils are aligned in parallel bundles, occurring in the muscles attached to bones and under voluntary control. Often contrasted with smooth muscle …   English new terms dictionary

  • striated muscle cell — noun an elongated contractile cell in striated muscle tissue • Syn: ↑striated muscle fiber • Hypernyms: ↑muscle cell, ↑muscle fiber, ↑muscle fibre • Part Holonyms: ↑skeletal muscle, ↑ …   Useful english dictionary

  • striated muscle fiber — noun an elongated contractile cell in striated muscle tissue • Syn: ↑striated muscle cell • Hypernyms: ↑muscle cell, ↑muscle fiber, ↑muscle fibre • Part Holonyms: ↑skeletal muscle, ↑ …   Useful english dictionary

  • striated muscle tissue — noun muscle tissue characterized by transverse stripes • Hypernyms: ↑muscle, ↑muscular tissue …   Useful english dictionary


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