| SLA | left sacroanterior [fetal position] [Lat. sacrolaeva anterior]; single-cell liquid cytotoxic assay; ... |
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| SMAS | submuscular aponeurotic system; superficial musculo-aponeurotic system; superior mesenteric artery s... |
| SOA-MCA | superficial occipital artery to middle cerebral artery |
| SPK | serum pyruvate kinase; superficial punctate keratitis |
| SSM | subsynaptic membrane; superficial spreading melanoma |
| perforating branches of palmar metacarpal arteries | The perforating branches of the palmar metacarpal arteries, three small arteries that pass dorsally through the second, third, and fourth interosseous spaces of the hand from the palmar metacarpal arteries. Synonym: ramus perforantes arteriarum metacarpalium palmarium, perforating arteries of hand. (05 Mar 2000) |
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| metacarpal | One of the five bones to each digit in the hand. Metacarpals articulate with the carpal bones in the wrist and the phalanges (finger bone). (27 Sep 1997) |
| metacarpal bone | One of the metacarpal bones, five long bones (numbered I to V, beginning with the bone on the radial or thumb side) forming the skeleton of the metacarpus or palm; they articulate with the bones of the distal row of the carpus and with the five proximal phalanges. Synonym: os metacarpale. (05 Mar 2000) |
| metacarpal index | The average ratio of length to breadth of metacarpals II to V; this ratio is increased in the Marfan syndrome. (05 Mar 2000) |
| metacarpal veins | See: dorsal metacarpal veins, palmar metacarpal veins. (05 Mar 2000) |
| head of metacarpal bone | The expanded distal end of a metacarpal that articulates with the proximal phalanx of the same digit. Synonym: caput ossis metacarpalis. (05 Mar 2000) |
| styloid process of third metacarpal bone | A pointed projection from the dorsolateral angle of the base of the third metacarpal bone; it sometimes exists as a separate ossicle. Synonym: processus styloideus ossis metacarpalis III. (05 Mar 2000) |
| dorsal metacarpal artery | <anatomy, artery> One of four arteries taking origin from the dorsal carpal arch and running on the posterior aspect of the interosseous muscles of the hand. Synonym: arteria metacarpea dorsalis, dorsal interosseous artery. (05 Mar 2000) |
| dorsal metacarpal ligaments | Fibrous bands connecting the dorsal aspects of the bases of metacarpals two to five. Synonym: ligamenta metacarpalia dorsalia. (05 Mar 2000) |
| dorsal metacarpal veins | Three veins on the dorsum of the hand draining blood from the four medial digits into the dorsal venous network of the hand. Synonym: venae metacarpeae dorsales. (05 Mar 2000) |
| interosseous metacarpal ligaments | Fibrous bands connecting the bases of metacarpals two to five; they extend between the dorsal and palmar metacarpal ligaments. Synonym: ligamenta metacarpalia interossea. (05 Mar 2000) |
| interosseous metacarpal spaces | The spaces between the metacarpal bones in the hand. Synonym: spatia interossea metacarpi. (05 Mar 2000) |
| anterior auricular branches of superficial temporal artery | <anatomy, artery> Distribution, auricle, earlobe and external acoustic meatus. Synonym: rami auriculares anteriores arteriae temporalis superficialis. (05 Mar 2000) |
| anterior superficial cervical lymph nodes | The lymph nodes in the subcutaneous tissue of the anterior region of the neck. Synonym: nodi lymphatici cervicales anteriores superficiales. (05 Mar 2000) |
| parietal branch of superficial temporal artery | <anatomy, artery> Branches coursing in relationship to and/or supplying the parietal lobe of the brain. Synonym: ramus parietalis arteriae temporalis superficialis. (05 Mar 2000) |