| SAX-PM | short-axis plane, papillary muscle |
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| SC | conditioned stimulus; sacrococcygeal; Sanitary Corps; scalenus [muscle]; scapula; Schwann cell; scia... |
| SM | Master of Science; sadomasochism; self-monitoring; silicon microphysiometer; simple mastectomy; skim... |
| SMA | sequential multiple analysis or analyzer; sequential multichannel autoanalyzer; simultaneous multich... |
| SMAF | smooth muscle activating factor; specific macrophage arming factor |
| superficial layer of the levator palpebrae superioris muscle | <anatomy> The superficial fibres of the levator muscle of the superior eyelid which are inserted into the skin of the superior eyelid. Synonym: lamina superficialis musculi levatoris palpebrae superioris. (05 Mar 2000) |
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| superficial lingual muscle | An intrinsic muscle of the tongue, running from base to tip on the dorsum just beneath the mucous membrane; action, shortens the upper part of the tongue; nerve supply, motor by hypoglossal, sensory by lingual. Synonym: musculus longitudinalis superior, superficial lingual muscle. (05 Mar 2000) |
| superficial part of masseter muscle | superficial part of masseter muscle |
| superficial transverse muscle of perineum | <anatomy> An inconstant muscle; origin, ramus of ischium; insertion, central tendon of perineum; action, draws back and fixes the central tendon of the perineum; nerve supply, pudendal (perineal). Synonym: musculus transversus perinei superficialis, superficial transverse muscle of perineum, Theile's muscle. (05 Mar 2000) |
| superficial transverse perineal muscle | <anatomy> An inconstant muscle; origin, ramus of ischium; insertion, central tendon of perineum; action, draws back and fixes the central tendon of the perineum; nerve supply, pudendal (perineal). Synonym: musculus transversus perinei superficialis, superficial transverse muscle of perineum, Theile's muscle. (05 Mar 2000) |
| superior belly of omohyoid muscle | <anatomy> The superior belly of the omohyoid muscle, attached to the hyoid bone. Synonym: venter superior musculi omohyoidei. (05 Mar 2000) |
| superior constrictor muscle of pharynx | Origin, medial pterygoid plate (pterygopharyngeal part), pterygomandibular raphe (buccopharyngeal part), mylohyoid line of mandible (mylopharyngeal part), and the mucous membrane of the floor of the mouth and the side of the tongue (glossopharyngeal part); insertion, pharyngeal raphe in the posterior wall of the pharynx; action, narrows pharynx; nerve supply, pharyngeal plexus. Synonym: musculus constrictor pharyngis superior, musculus cephalopharyngeus. (05 Mar 2000) |
| superior longitudinal muscle of tongue | An intrinsic muscle of the tongue, running from base to tip on the dorsum just beneath the mucous membrane; action, shortens the upper part of the tongue; nerve supply, motor by hypoglossal, sensory by lingual. Synonym: musculus longitudinalis superior, superficial lingual muscle. (05 Mar 2000) |
| superior oblique muscle of head | <anatomy, muscle> Origin, transverse process of atlas; insertion, lateral third of inferior nuchal line; action, rotates head; nerve supply, suboccipital. See: suboccipital muscles. Synonym: musculus obliquus capitis superior, superior oblique muscle of head. (05 Mar 2000) |
| superior posterior serratus muscle | <anatomy> Origin, from spinous processes of two lower cervical and two upper thoracic vertebrae; insertion, into lateral side of angles of second to fifth ribs; nerve supply, first to fourth intercostals. Synonym: musculus serratus posterior superior, superior posterior serratus muscle. (05 Mar 2000) |
| superior tarsal muscle | <anatomy> A well defined layer of smooth muscle that extends from the aponeurosis of the musculus levator palpebrae superioris to the superior tarsus; it is innervated by sympathetic nerves and acts to hold the upper lid in an elevated position; its paralysis in Horner's syndrome result in ptosis. Synonym: musculus tarsalis superior, Muller's muscle. (05 Mar 2000) |
| deep flexor muscle of fingers | <anatomy, muscle> Origin, anterior surface of upper third of ulna; insertion, by four tendons, piercing those of the superficialis, into base of distal phalanx of each finger; action, flexes distal interphalangeal joint of fingers; nerve supply, ulnar and median (anterior interosseous muscle). Synonym: musculus flexor digitorum profundus, deep flexor muscle of fingers, musculus flexor profundus. (05 Mar 2000) |
| deep layer of levator palpebrae superioris muscle | <anatomy> The deeper fibres of the levator muscle of the superior eyelid which are inserted into the superior tarsal plate. Synonym: lamina profunda musculi levatoris palpebrae superioris. (05 Mar 2000) |
| deep part of masseter muscle | deep part of masseter muscle |
| supraclavicular muscle | <anatomy> An anomalous muscular slip running from the upper edge of the manubrium of the sternum lateralward to about the middle of the upper surface of the clavicle. Synonym: musculus supraclavicularis. (05 Mar 2000) |