| OR | a logical binary relation that is true if any argument is true, and false otherwise; [o]estrogen rec... |
|---|---|
| ORD | optical rotatory dispersion; oral radiation death |
| PAR | participating provider; passive avoidance reaction; perennial allergic rhinitis; photosynthetically ... |
| PQRST | provocative and palliative factors, quality of pain, radiation of pain, severity of pain, timing of ... |
| PWBRT | prophylactic whole brain radiation therapy |
| SSR | solar simulated radiation |
|---|---|
| SR | synchrotron radiation |
| TRT | thoracic radiation therapy |
| superficial reflex | Any reflex, e.g., the abdominal or cremasteric reflex, which is elicited by stimulation of the skin. (05 Mar 2000) |
|---|---|
| superficial spreading melanoma | <tumour> Primary cutaneous melanoma characterised by intraepidermal growth extending laterally beyond the site of dermal invasion. (05 Mar 2000) |
| superficial temporal artery | <anatomy, artery> Origin, a terminal branch of the external carotid (with maxillary artery); branches, transverse facial, middle temporal, orbital, parotid, anterior auricular, frontal, and parietal. Synonym: arteria temporalis superficialis. (05 Mar 2000) |
| superficial temporal branch of auriculotemporal nerve | Branches of auriculotemporal nerve to anterolateral scalp. Synonym: rami temporales superficiales nervi auriculotemporalis. (05 Mar 2000) |
| superficial temporal plexus | An autonomic plexus of nerves on the artery of this name, derived from the external carotid plexus. Synonym: plexus temporalis superficialis. (05 Mar 2000) |
| superficial temporal veins | Veins that pass from the temporal region to join the maxillary vein to form the retromandibular vein. Synonym: venae temporales superficiales. (05 Mar 2000) |
| superficial transverse metacarpal ligament | <anatomy> A thickening of the deep fascia in the most distal part of the (base) of the triangular palmar aponeurosis. Synonym: ligamentum metacarpale transversum superficiale, Gerdy's fibres, ligamentum natatorium. (05 Mar 2000) |
| superficial transverse metatarsal ligament | <anatomy> A thickening of the distal part (base) of the plantar aponeurosis, at the level of the heads of the metatarsal bones. Synonym: ligamentum metatarsale transversum superficiale. (05 Mar 2000) |
| 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) |
| superficial vein | <anatomy, vein> One of a number of veins that course in the subcutaneous tissue and empty into deep veins; they form prominent systems of vessels in the limbs and are usually not accompanied by arteries. Synonym: vena cutanea, cutaneous vein. (05 Mar 2000) |
| superficial volar artery | <anatomy, artery> The superficial palmar branch of the radial artery which supplies the thenar muscles then enters the palm to communicate with the superficial palmar arch from the ulnar artery. Synonym: ramus palmaris superficialis arteriae radialis, superficial palmar artery, superficial volar artery, superficialis volae. (05 Mar 2000) |
| ulnar communicating branch of superficial radial nerve | <anatomy, nerve> Ulnar communicating branch of superficial branch of radial nerve, joining the dorsal branch of the ulnar nerve in the hand conveying sensation from the dorsal aspect of adjacent sides of the middle and ring fingers. Synonym: ramus communicans ulnaris nervi radialis. (05 Mar 2000) |
| fatty layer of superficial fascia | The more superficial, fatty part of the superficial fascia of the lower anterior abdominal wall. Synonym: fatty layer of superficial fascia. (05 Mar 2000) |
| lateral crus of the superficial inguinal ring | Portion of the external oblique aponeurosis which passes lateral to the superficial inguinal ring blending into the inguinal ligament and forming the lateral boundary of the ring. Synonym: crus laterale anuli inguinalis superficialis. (05 Mar 2000) |