| RMS | rectal morphine sulfate [suppository]; red man syndrome; repetitive motion syndrome; respiratory mus... |
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| RSO | radiation safety officer; Resident Surgical Officer; right superior oblique [muscle] |
| RSR | regular sinus rhythm; relative survival rate; right superior rectus [muscle] |
| RVG | right ventral glutens [muscle]; right visceral ganglion |
| SAQ | short arc quadriceps [muscle] |
| styloauricular muscle | <anatomy> An occasional small muscle extending from the root of the styloid process to the cartilage of the meatus of the ear. Synonym: musculus styloauricularis. (05 Mar 2000) |
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| styloglossus muscle | <anatomy> Action, retracts tongue; origin, lower end of styloid process; insertion, side and undersurface of tongue; nerve supply, hypoglossal. Synonym: musculus styloglossus. (05 Mar 2000) |
| stylohyoid muscle | <anatomy, muscle> Origin, styloid process of temporal bone; insertion, hyoid bone by two slips on either side of intermediate tendon of digastric; action, elevates hyoid bone; nerve supply, facial. Synonym: musculus stylohyoideus. (05 Mar 2000) |
| stylopharyngeal muscle | <anatomy, muscle> Origin, root of styloid process; insertion, thyroid cartilage and wall of pharynx (becomes part of the longitudinal coat): action, elevates pharynx and larynx; nerve supply, glossopharyngeal. Synonym: musculus stylopharyngeus, stylopharyngeal muscle. (05 Mar 2000) |
| subanconeus muscle | <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) |
| subclavian muscle | <anatomy, muscle> Origin, first costal cartilage; insertion, inferior surface of acromial end of clavicle; action, fixes clavicle or elevates first rib; nerve supply, subclavian from brachial plexus. Synonym: musculus subclavius, subclavian muscle. (05 Mar 2000) |
| subcostal muscle | <anatomy> One of a number of inconstant muscles of the posterolateral thoracic wall having the same direction as the internal intercostal muscles but extending across (deep to) one or more ribs. Synonym: musculus subcostalis, musculus infracostalis. (05 Mar 2000) |
| subcrural muscle | <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) |
| subquadricipital muscle | <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) |
| subscapular muscle | <anatomy, muscle> Origin, subscapular fossa; insertion, lesser tuberosity of humerus; action, rotates arm medially; nerve supply, upper and lower subscapular from posterior cord of brachial plexus (fifth and sixth cervical spinal nerves). Synonym: musculus subscapularis, subscapular muscle. (05 Mar 2000) |
| subtendinous bursa of gastrocnemius muscle | <anatomy> Consists of a lateral and a medial (Brodie's bursa) bursa between the heads of the gastrocnemius and capsule of the knee joint. Synonym: bursa subtendineae musculi gastrocnemii, bursa of gastrocnemius. (05 Mar 2000) |
| subtendinous bursa of the tibialis anterior muscle | <anatomy> The small bursa between the medial surface of the medial cuneiform bone and the tendon of the tibialis anterior. Synonym: bursa subtendinea musculi tibialis anterioris, anterior tibial bursa. (05 Mar 2000) |
| dartos muscle | A layer of smooth muscular tissue in the integument of the scrotum. See: dartos muliebris. Synonym: tunica dartos, dartos muscle, membrana carnosa, tunica carnea. (05 Mar 2000) |
| superficial flexor muscle of fingers | <anatomy, muscle> Origin, humeroulnar head from the medial epicondyle of the humerus, the medial border of the coronoid process, and a tendinous arch between these points, radial head from the oblique line and middle third of the lateral border of the radius; insertion, by four split tendons, passing to either side of the profundus tendons, into sides of middle phalanx of each finger; action, flexes proximal interphalangeal joint of the fingers; nerve supply, median. Synonym: musculus flexor digitorum superficialis, musculus flexor digitorum sublimis, musculus flexor sublimis, superficial flexor muscle of fingers. (05 Mar 2000) |
| superficial head of flexor pollicis brevis muscle | <anatomy> The head of the short flexor of the thumb that arises from the transverse carpal ligament and the trapezium. It is innervated by the recurrent branch of the median nerve. Synonym: caput superficiale musculi flexoris pollicis brevis. (05 Mar 2000) |