| 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 |
| superficial back muscles | Muscles originating from the vertebral column and having their fleshy bellies located in the back, but inserting onto the appendicular skeleton of the upper limb or the ribs. They are not innervated by dorsal primary rami of spinal nerves, as are the deep or true muscles of the back; includes the trapezius muscle (innervated by spinal accessory nerve) and latissimus dorsi, rhomboids, levator scapulae, and thoracic muscles (innervated by ventral primary rami of spinal nerves, or derivatives thereof). (05 Mar 2000) |
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| superficial brachial artery | <anatomy, artery> An occasional variation in which the brachial artery lies superficial to the median nerve in the arm. Synonym: arteria brachialis superficialis. (05 Mar 2000) |
| superficial branch | Branch which passes above or closer to surface; usually in contrast to a deep branch. Synonym: ramus superficialis. (05 Mar 2000) |
| superficial branch of the radial nerve | <anatomy, nerve> Cutaneous terminal branch (with deep branch) which runs under cover of brachioradialis muscle to wrist, then supplies skin of proximal portion of the dorsal aspects of thumb, index, middle and lateral half of ring fingers and the portion of the dorsum of the hand located proximally. Synonym: ramus superficialis nervi radialis. (05 Mar 2000) |
| superficial branch of the superior gluteal artery | <anatomy, artery> To upper gluteus maximus muscle. Synonym: ramus superficialis arteriae gluteae superioris. (05 Mar 2000) |
| superficial branch of the transverse cervical artery | <anatomy, artery> Branch of transverse cervical artery which accompanies the spinal accessory nerve on the deep surface of the trapezius muscle. Alternatively arises as a direct branch of the thyrocervical trunk, in which case it is called the superficial cervical artery. (05 Mar 2000) |
| superficial branch of the ulnar nerve | <anatomy, nerve> Branch supplying skin of palmar aspect of little and medial half of ring fingers, the portion of the palm proximal to them and the palmaris brevis muscle. Synonym: ramus superficialis nervi ulnaris. (05 Mar 2000) |
| superficial burn | A burn involving only the epidermis and causing erythema and oedema without vesiculation. Synonym: superficial burn. (05 Mar 2000) |
| superficial cardiac plexus | The superficial and smaller subdivision of the cardiac plexus, formed by the left superior cardiac nerves from the left vagus and cervical sympathetic trunk; it is found beneath the aortic arch, between the arch and the bifurcation of the pulmonary trunk. Synonym: plexus cardiacus superficialis. (05 Mar 2000) |
| superficial cerebral veins | The veins on the superficial surface of the cerebral hemispheres; they comprise three groups: superior, middle, and inferior. Synonym: venae cerebri superficiales. (05 Mar 2000) |
| superficial cervical artery | <anatomy, artery> Origin, branch of thyrocervical trunk, running with spinal accessory nerve deep to trapezius muscle. See: superficial branch of the transverse cervical artery. Synonym: arteria cervicalis superficialis. (05 Mar 2000) |
| superficial cervical nerve | <anatomy, nerve> A branch of the cervical plexus that supplies the skin over the anterior triangle of the neck. Synonym: nervus transversus colli, cutaneous cervical nerve, nervus cervicalis superficialis, superficial cervical nerve, transverse nerve of neck. (05 Mar 2000) |
| superficial circumflex iliac artery | <anatomy, artery> Origin, femoral; distribution, inguinal lymph nodes and integument of that region; sartorius, and tensor fasciae latae muscles; anastomoses, deep circumflex iliac. Synonym: arteria circumflexa iliaca superficialis. (05 Mar 2000) |
| superficial circumflex iliac vein | <anatomy, vein> Corresponding to the artery of the same name, emptying usually into the great saphenous vein, or sometimes into the femoral vein. Synonym: vena circumflexa iliaca superficialis. (05 Mar 2000) |
| superficial cleavage | Meroblastic cleavage with the divisions limited to the peripheral (surface) cytoplasm of a centrolecithal egg. (05 Mar 2000) |