| MP | macrophage; matrix protein; mean pressure; melphalan and prednisone; melting point; membrane potenti... |
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| MPM | malignant papillary mesothelioma; medial pterygoid muscle; minor psychiatric morbidity; multiple pri... |
| MRF | Markov random field; medical record file; melanocyte-[stimulating hormone]-releasing factor; mesence... |
| MRO | master reference oscillator; medical review officer; minimal recognizable odor; muscle receptor orga... |
| MRT | magnetic resonance tomography; maximum relaxation time; median range score; median reaction time; me... |
| muscle plate | <anatomy> A muscular segment; one of the zones into which the muscles of the trunk, especially in fishes, are divided; a myocomma. One of the embryonic muscular segments arising from the protovertebrae; also, one of the protovertebrae themselves. The muscular system of one metamere of an articulate. See: Myotomy. Source: Websters Dictionary (01 Mar 1998) |
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| muscle proteins | The protein constituents of muscle, the major ones being actins and myosin. More than a dozen accessary proteins exist including troponin, tropomyosin, and dystrophin. (12 Dec 1998) |
| muscle relaxant | <pharmacology> An agent that specifically AIDS in reducing muscle tension, as those acting at the polysynaptic neurons of motor nerves (for example meprobamate) or at the myoneural junction (curare and related compounds). Origin: L. Relaxare = to loosen (18 Nov 1997) |
| muscle relaxants, central | A heterogeneous group of drugs used to produce muscle relaxation, excepting the neuromuscular blocking agents. They have their primary clinical and therapeutic uses in the treatment of muscle spasm and immobility associated with strains, sprains, and injuries of the back and, to a lesser degree, injuries to the neck. They have been used also for the treatment of a variety of clinical conditions that have in common only the presence of skeletal muscle hyperactivity, for example, the muscle spasms that can occur in multiple sclerosis. (12 Dec 1998) |
| muscle relaxation | That phase of a muscle twitch during which a muscle returns to a resting position. (12 Dec 1998) |
| muscle repositioning | The surgical replacement of a muscle attachment into a more functional position. (05 Mar 2000) |
| muscle resection | Shortening of the tendon of the ocular muscle in strabismus. (05 Mar 2000) |
| muscle rigidity | Continuous tonic contraction of skeletal muscle. (12 Dec 1998) |
| muscle serum | The fluid remaining after the coagulation of muscle plasma and the separation of myosin. (05 Mar 2000) |
| muscle, skeletal | Striated muscles having fibres connected at either or both extremities with the bony framework of the body. These are found in appendicular and axial muscles. (12 Dec 1998) |
| muscle, smooth | Unstriated and unstriped muscle, one of the muscles of the internal organs, blood vessels, hair follicles, etc. Contractile elements are elongated, usually spindle-shaped cells with centrally located nuclei. Smooth muscle fibres are bound together into sheets or bundles by reticular fibres and frequently elastic nets are also abundant. (12 Dec 1998) |
| muscle, smooth, vascular | The nonstriated, involuntary muscle tissue of blood vessels. (12 Dec 1998) |
| muscle sound | A fine murmur heard on auscultation over the belly of a contracting muscle. (05 Mar 2000) |
| muscle spasm | <physiology> Painful involuntary muscle contractions. Often seen in skeletal muscle after acute injury (muscle strain). (07 Apr 1998) |
| muscle spasticity | A combination of the symptoms of increased resistance to lengthening, hyperactive tendon reflexes, and clonus. Muscle spasticity occurs in hemiplegia. (12 Dec 1998) |