| MRT | magnetic resonance tomography; maximum relaxation time; median range score; median reaction time; me... |
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| MSA | major serologic antigen; male-specific antigen; mannitol salt agar; Medical Services Administration;... |
| MSE | medical support equipment; mental status examination; muscle-specific enolase |
| msp | muscle spasm |
| MSR | macrophage scavenger receptor; Member of the Society of Radiographers; monosynaptic reflex; muscle s... |
| palmar interosseous muscle | <anatomy> Three muscles in the hand; origin, first: ulnar side of second metacarpal; second and third: radial sides of fourth and fifth metacarpals; insertion, first: into ulnar side of index; second and third: into radial sides of ring and little fingers; action, adducts fingers toward axis of middle finger; nerve supply, ulnar. See: flexor pollicis brevis muscle. Synonym: musculus interosseus palmaris, musculus interosseus volaris. (05 Mar 2000) |
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| Gantzer's muscle | <anatomy> An accessory muscle extending from the superficial flexor of the digits to the deep flexor of the digits. (05 Mar 2000) |
| palpebral part of orbicularis oculi muscle | palpebral part of orbicularis oculi muscle |
| panniculus carnosus muscle | <anatomy> A sheet of muscle, lying beneath the skin, by which the skin can be made to shiver; it is especially well developed in the horse, in man, platysma. (05 Mar 2000) |
| papillary muscle | <anatomy> Small muscles within the heart which anchor the heart valves. (12 Dec 1998) |
| papillary muscle dysfunction | Impaired function of a papillary muscle, usually due to ischemia or infarction, with resulting incompetence of the mitral valve. Synonym: papillary muscle syndrome. (05 Mar 2000) |
| papillary muscle syndrome | Impaired function of a papillary muscle, usually due to ischemia or infarction, with resulting incompetence of the mitral valve. Synonym: papillary muscle syndrome. (05 Mar 2000) |
| Gavard's muscle | <anatomy> Oblique fibres in the muscular coat of the stomach. (05 Mar 2000) |
| ventral sacrococcygeal muscle | <anatomy> An inconstant muscle on the pelvic surfaces of the sacrum and coccyx, the remains of a portion of the tail musculature of lower animals. Synonym: musculus sacrococcygeus ventralis, musculus sacrococcygeus anterior, ventral sacrococcygeal muscle. (05 Mar 2000) |
| ventral sacrococcygeus muscle | <anatomy> An inconstant muscle on the pelvic surfaces of the sacrum and coccyx, the remains of a portion of the tail musculature of lower animals. Synonym: musculus sacrococcygeus ventralis, musculus sacrococcygeus anterior, ventral sacrococcygeal muscle. (05 Mar 2000) |
| Marcacci's muscle | <anatomy> A sheet of smooth muscle fibres underlying the areola and nipple of the mammary gland. (05 Mar 2000) |
| genioglossal muscle | <anatomy> One of the paired lingual muscles; origin, mental spine of the mandible; insertion, lingual fascia beneath the mucous membrane and epiglottis; action, depresses and protrudes the tongue; nerve supply, hypoglossal. Synonym: musculus genioglossus, genioglossal muscle, genioglossus, musculus geniohyoglossus. (05 Mar 2000) |
| genioglossus muscle | <anatomy> One of the paired lingual muscles; origin, mental spine of the mandible; insertion, lingual fascia beneath the mucous membrane and epiglottis; action, depresses and protrudes the tongue; nerve supply, hypoglossal. Synonym: musculus genioglossus, genioglossal muscle, genioglossus, musculus geniohyoglossus. (05 Mar 2000) |
| marginal part of orbicularis oris muscle | <anatomy> The part of the orbicularis oris muscle located in the margin of the lips, i.e., the red area. Synonym: pars marginalis musculi orbicularis oris. (05 Mar 2000) |
| vertical muscle of tongue | An intrinsic muscle of the tongue, consisting of fibres that pass from the aponeurosis of the dorsum to the aponeurosis of the inferior surface; action, decreases the superior to inferior dimension of (flattens) the tongue; nerve supply, hypoglossal for motor, lingual for sensory. Synonym: musculus verticalis linguae. (05 Mar 2000) |