| ASM | acid sphingomyelinase; airway smooth muscle; American Society for Microbiology; anterior scalenus mu... |
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| CM | California mastitis [test]; calmodulin; capreomycin; carboxymethyl; cardiac murmur; cardiac muscle; ... |
| LM | lactic acid mineral [medium]; lactose malabsorption; laryngeal mask; laryngeal muscle; lateral malle... |
| MG | Marcus Gunn [pupil]; margin; medial gastrocnemius [muscle]; membranous glomerulonephritis; menopausa... |
| MS | Maffuci syndrome; maladjustment score; mandibular series; Marfan syndrome; Marie-Strumpell [syndrome... |
| musculus abductor pollicis longus | <anatomy> Origin, interosseous membrane and posterior surfaces of radius and ulna; insertion, lateral side of base of first metacarpal bone; action, abducts and assists in extending thumb; nerve supply, radial. Synonym: musculus abductor pollicis longus, long abductor muscle of thumb, musculus extensor ossis metacarpi pollicis. (05 Mar 2000) |
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| musculus extensor brevis pollicis | <anatomy, muscle> Origin, dorsal surface of radius; insertion, base of proximal phalanx of thumb; action, extends and abducts the thumb; nerve supply, radial. Synonym: musculus extensor pollicis brevis, musculus extensor brevis pollicis, short extensor muscle of thumb. (05 Mar 2000) |
| musculus extensor longus pollicis | <anatomy, muscle> Origin, posterior surface of ulna; insertion, base of distal phalanx of thumb; action, extends distal phalanx of thumb; nerve supply, radial. Synonym: musculus extensor pollicis longus, long extensor muscle of thumb, musculus extensor longus pollicis. (05 Mar 2000) |
| musculus extensor ossis metacarpi pollicis | <anatomy> Origin, interosseous membrane and posterior surfaces of radius and ulna; insertion, lateral side of base of first metacarpal bone; action, abducts and assists in extending thumb; nerve supply, radial. Synonym: musculus abductor pollicis longus, long abductor muscle of thumb, musculus extensor ossis metacarpi pollicis. (05 Mar 2000) |
| musculus extensor pollicis brevis | <anatomy, muscle> Origin, dorsal surface of radius; insertion, base of proximal phalanx of thumb; action, extends and abducts the thumb; nerve supply, radial. Synonym: musculus extensor pollicis brevis, musculus extensor brevis pollicis, short extensor muscle of thumb. (05 Mar 2000) |
| musculus extensor pollicis longus | <anatomy, muscle> Origin, posterior surface of ulna; insertion, base of distal phalanx of thumb; action, extends distal phalanx of thumb; nerve supply, radial. Synonym: musculus extensor pollicis longus, long extensor muscle of thumb, musculus extensor longus pollicis. (05 Mar 2000) |
| musculus flexor longus pollicis | <anatomy, muscle> Origin, anterior surface of middle third of radius; insertion, distal phalanx of thumb; action, flexes distal phalanx of thumb; nerve supply, median palmar interosseous. Synonym: musculus flexor pollicis longus, long flexor muscle of thumb, musculus flexor longus pollicis. (05 Mar 2000) |
| musculus flexor pollicis brevis | <anatomy, muscle> Origin, superficial portion from flexor retinaculum of wrist, deep portion from ulnar side of first metacarpal bone; insertion, base of proximal phalanx of thumb; action, flexes proximal phalanx of thumb; nerve supply, median (superficial head) and deep branch of ulnar (deep head). Some authors consider the deep head to be the first in a series of four palmar interossei muscles of the hand. Synonym: musculus flexor pollicis brevis, short flexor muscle of thumb. (05 Mar 2000) |
| musculus flexor pollicis longus | <anatomy, muscle> Origin, anterior surface of middle third of radius; insertion, distal phalanx of thumb; action, flexes distal phalanx of thumb; nerve supply, median palmar interosseous. Synonym: musculus flexor pollicis longus, long flexor muscle of thumb, musculus flexor longus pollicis. (05 Mar 2000) |
| musculus opponens pollicis | <anatomy, muscle> Origin, ridge of trapezium and flexor retinaculum; insertion, anterior surface of the full length of the shaft of the first metacarpal bone; action, acts at carpometacarpal joint to "cup" palm, enabling one to oppose thumb to other fingers; nerve supply, median. Synonym: musculus opponens pollicis, opposer muscle of thumb. (05 Mar 2000) |
| princeps pollicis | <anatomy, artery> Origin, radial (deep palmar (arterial) arch); distribution, palmar surface and sides of thumb; anastomoses, arteries on dorsum of thumb. Synonym: arteria princeps pollicis, chief artery of thumb, princeps pollicis, principal artery of thumb. (05 Mar 2000) |
| princeps pollicis artery | <anatomy, artery> Origin, radial (deep palmar (arterial) arch); distribution, palmar surface and sides of thumb; anastomoses, arteries on dorsum of thumb. Synonym: arteria princeps pollicis, chief artery of thumb, princeps pollicis, principal artery of thumb. (05 Mar 2000) |
| deep head of flexor pollicis brevis | The head of short flexor of the thumb that arises from the trapezoid and capitate bones and transverse carpal ligaments. It is innervated by the deep ulner nerve, and considered by many to be the first palmar interosseous muscle. Synonym: caput profundum musculi flexoris pollicis brevis. (05 Mar 2000) |
| opponens pollicis | <anatomy, muscle> Origin, ridge of trapezium and flexor retinaculum; insertion, anterior surface of the full length of the shaft of the first metacarpal bone; action, acts at carpometacarpal joint to "cup" palm, enabling one to oppose thumb to other fingers; nerve supply, median. Synonym: musculus opponens pollicis, opposer muscle of thumb. (05 Mar 2000) |
| extensor pollicis brevis | <anatomy, muscle> Origin, dorsal surface of radius; insertion, base of proximal phalanx of thumb; action, extends and abducts the thumb; nerve supply, radial. Synonym: musculus extensor pollicis brevis, musculus extensor brevis pollicis, short extensor muscle of thumb. (05 Mar 2000) |