| 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 adductor brevis | <anatomy, muscle> Origin, superior ramus of pubis; insertion, upper third of medial lip of linea aspera; action, adducts thigh; nerve supply, obturator. Synonym: musculus adductor brevis, short adductor muscle. (05 Mar 2000) |
| musculus adductor hallucis | <anatomy, muscle> Origin, by two heads, the transverse head from the capsules of the lateral four metatarsophalangeal joints and the oblique head from the lateral cuneiform and bases of the third and fourth metatarsal bones; insertion, lateral side of base of proximal phalanx of great toe; action, adducts great toe; nerve supply, lateral plantar. Synonym: musculus adductor hallucis, adductor muscle of great toe. (05 Mar 2000) |
| musculus adductor longus | <anatomy, muscle> Origin, symphysis and crest of pubis; insertion, middle third of medial lip of linea aspera of femur; action, adducts, flexes and laterally rotates the thigh; nerve supply, obturator. Synonym: musculus adductor longus, long adductor muscle. (05 Mar 2000) |
| musculus adductor magnus | <anatomy, muscle> Origin, ischial tuberosity and ischiopubic ramus; insertion, linea aspera and adductor tubercle of femur; action, adducts and extends thigh; nerve supply, obturator and sciatic. Synonym: musculus adductor magnus, great adductor muscle. (05 Mar 2000) |
| musculus adductor minimus | <anatomy> A small flat muscle constituting the upper portion of the adductor magnus, insertion, the space above linea aspera. Synonym: musculus adductor minimus. (05 Mar 2000) |
| musculus adductor pollicis | <anatomy, muscle> Origin, by two heads, the transverse head from the shaft of the third metacarpal and the oblique head from the front of the base of the second metacarpal, the trapezoid and capitate bones; insertion, medial side of base of proximal phalanx of thumb; action, adducts thumb; nerve supply, ulnar. Synonym: musculus adductor pollicis, adductor muscle of thumb. (05 Mar 2000) |
| musculus anconeus | <anatomy, muscle> Origin, back of lateral condyle of humerus; insertion, olecranon process and posterior surface of ulna; action, extends forearm and abducts ulna in pronation of wrist; nerve supply, radial. Synonym: musculus anconeus, anconeus. (05 Mar 2000) |
| musculus antitragicus | <anatomy> A band of transverse muscular fibres on the outer surface of the antitragus, arising from the border of the intertragic notch and inserted into the anthelix and cauda helicis. Synonym: musculus antitragicus, muscle of antitragus. (05 Mar 2000) |
| musculus articularis | <anatomy> A muscle that inserts directly onto the capsule of a joint, acting to retract the capsule in certain movements. Synonym: musculus articularis. (05 Mar 2000) |
| musculus articularis cubiti | <anatomy> The name applied to a small slip of the medial head of the triceps that inserts into the capsule of the elbow joint. Synonym: musculus articularis cubiti, articular muscle of elbow, subanconeus muscle. (05 Mar 2000) |
| musculus articularis genus | <anatomy, muscle> Origin, lower fourth of anterior surface of shaft of femur; insertion, suprapatellar bursa of knee joint; action, retracts suprapatellar bursa, during extension of knee; nerve supply, femoral. Synonym: musculus articularis genus, articular muscle of knee, Dupre's muscle, subcrural muscle, subcruralis, subcrureus, subquadricipital muscle. (05 Mar 2000) |
| musculus aryepiglotticus | <anatomy> The fibres of the oblique arytenoid muscle that extend from the summit of the arytenoid cartilage to the side of the epiglottis; action, constricts the laryngeal aperture. Synonym: musculus aryepiglotticus. (05 Mar 2000) |
| musculus arytenoideus obliquus | <anatomy, muscle> Origin, muscular process of arytenoid cartilage; insertion, summit of arytenoid cartilage of opposite side and continuing as the aryepiglottic muscle in the aryepiglottic fold to the epiglottis; action, narrows the interarytenoid portion of the rima glottidis; nerve supply, recurrent laryngeal. Synonym: musculus arytenoideus obliquus, arytenoideus. (05 Mar 2000) |
| musculus arytenoideus transversus | <anatomy> A band of muscular fibres passing between the two arytenoid cartilages posteriorly; action, narrows the intercartilaginous portion of the rima glottidis; nerve supply, recurrent laryngeal. Synonym: musculus arytenoideus transversus, arytenoideus. (05 Mar 2000) |