| MPM | malignant papillary mesothelioma; medial pterygoid muscle; minor psychiatric morbidity; multiple pri... |
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| 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... |
| MSA | major serologic antigen; male-specific antigen; mannitol salt agar; Medical Services Administration;... |
| Riolan's muscle | <anatomy> Marginal fibres of the palpebral part of the orbicularis oculi muscle. Synonym: cremaster muscle. (05 Mar 2000) |
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| chondroglossus muscle | <anatomy> Muscular fibres from lesser horn of hyoid bone occasionally separated from the hyoglossus, but usually forming part of it. Synonym: musculus chondroglossus, ceratoglossus, keratoglossus. (05 Mar 2000) |
| Guthrie's muscle | Origin, ramus of pubis; insertion, with fellow in median raphe behind and in front of urethra; action, constricts membranous urethra; nerve supply, pudendal. Synonym: musculus sphincter urethrae, external urethral sphincter, Guthrie's muscle, musculus compressor urethrae, musculus constrictor urethrae, musculus sphincter urethrae membranaceae, sphincter muscle of urethra, Wilson's muscle. (05 Mar 2000) |
| Rouget's muscle | The circular fibres of the ciliary muscle. Synonym: fibrae circulares, Muller's fibres, Muller's muscle, Rouget's muscle. (05 Mar 2000) |
| round pronator muscle | <anatomy, muscle> Origin, superficial (humeral) head (ulnar) from the common flexor origin on the medial epicondyle of the humerus, deep (ulnar) head from the medial side of the coronoid process of the ulna; insertion, middle of the lateral surface of the radius; action, pronates forearm; nerve supply, median. Synonym: musculus pronator teres, musculus pronator radii teres, round pronator muscle. (05 Mar 2000) |
| ciliary muscle | <anatomy> The smooth muscle of the ciliary body; it consists of circular fibres (Muller's muscle) and radiating fibres (meridional fibres, or Brucke's muscle); action, in contracting, its diameter is reduced (like a sphincter), reducing tensile (stretching) forces on lens, allowing it to thicken for near vision (accommodation). Synonym: musculus ciliaris, Bowman's muscle, ciliary ligament. (05 Mar 2000) |
| middle constrictor muscle of pharynx | Origin, stylohyoid ligament, lesser cornu of the hyoid bone (chondropharyngeal part) and greater cornu of the hyoid bone (ceratopharyngeal part); insertion, pharyngeal raphe in the posterior wall of the pharynx; action, narrows pharynx in the act of swallowing; nerve supply, pharyngeal plexus. Synonym: musculus constrictor pharyngis medius. (05 Mar 2000) |
| Ruysch's muscle | <anatomy> The muscular tissue of the fundus of the uterus. (05 Mar 2000) |
| middle scalene muscle | <anatomy, muscle> Origin, costotransverse lamellae of transverse processes of second to sixth cervical vertebrae; insertion, first rib posterior to subclavian artery; action, raises first rib; nerve supply, cervical plexus. Synonym: musculus scalenus medius, middle scalene muscle. (05 Mar 2000) |
| clavicular part of pectoralis major muscle | pars clavicularis musculi pectoralis majoris, clavicular head of pectoralis major |
| mitochondria, muscle | Mitochondria of skeletal and smooth muscle. It does not include myocardial mitochondria for which mitochondria, heart is available. (12 Dec 1998) |
| physical elasticity of muscle | <anatomy> The quality of muscle that enables it to yield to passive physical stretch. (05 Mar 2000) |
| physiologic elasticity of muscle | The biologic quality, unique for muscle, of being able to change and resume size under neuromuscular control. (05 Mar 2000) |
| coccygeal muscle | <anatomy, muscle> Origin, spine of ischium and sacrospinous ligament; insertion, sides of lower part of sacrum and upper part of coccyx; action, assists in support of pelvic floor, especially when intra-abdominal pressures increase; nerve supply, third and fourth sacral. Synonym: musculus coccygeus, coccygeal muscle, musculus ischiococcygeus. (05 Mar 2000) |
| molluscan catch muscle | <biology> Muscle responsible for holding closed the two halves of the shell of bivalves. Specialise d to maintain tension with low expenditure of ATP. Rich in paramyosin. (18 Nov 1997) |