| SR | sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentat... |
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| SRV | Schmidt-Ruppin virus; simian retrovirus; superior radicular vein |
| SSS | scalded skin syndrome; secondary Sjogren syndrome; sick sinus syndrome; specific soluble substance; ... |
| SSST | superior sagittal sinus thrombosis |
| SSSV | superior sagittal sinus velocity |
| posterior branch of superior thyroid artery | <anatomy, artery> Branch of superior thyroid artery which descends to supply the apical portion of the ipsilateral lobe of the thyroid, continuing along the posterior border of the gland to anastomose with the inferior thyroid artery. Synonym: ramus posterior arteriae thyroideae superioris. (05 Mar 2000) |
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| posterior superior alveolar artery | <anatomy, artery> Origin, 3rd part of maxillary artery within pterygopalatine fossa; distribution, molar and premolar teeth, gingiva and mucous membrane of maxillary sinus. Synonym: arteria alveolaris superior posterior, posterior alveolar artery, posterior dental artery. (05 Mar 2000) |
| posterior superior alveolar branches of maxillary nerve | <anatomy, nerve> The branches of the superior alveolar nerves that supply the maxillary sinus and the molar tooth. Synonym: rami alveolares superiores posteriores nervi maxillaris. (05 Mar 2000) |
| posterior superior iliac spine | The posterior extremity of the iliac crest, the uppermost point of attachment of the sacrotuberous and posterior sacroiliac ligaments; a readily apparent dimple occurs in the skin overlying the posterior superior iliac spine which is clinically useful as an indication of the level of the S-2 vertebra, the level of the inferior limit of the subarachnoid space. Synonym: spina iliaca posterior superior. (05 Mar 2000) |
| posterior superior lateral nasal branches of pterygopalatine ganglion | Branches of pterygopalatine ganglion to upper posterior part of lateral wall of nasal cavity, including superior and middle nasal concha/meatuses, and posterior ethmoidal sinuses. Synonym: rami nasales posteriores superiores laterales ganglii pterygopalatini. (05 Mar 2000) |
| posterior superior medial nasal branches of pterygopalatine ganglion | Usually branches of the nasopalatine nerve to posterior superior nasal septum. Synonym: rami nasales posteriores superiores mediales ganglii pterygopalatini. (05 Mar 2000) |
| processus articularis superior ossis sacri | The large process on each side of the sacrum posteriorly that articulates with the corresponding inferior articular process of the fifth lumbar vertebra. Synonym: processus articularis superior ossis sacri. (05 Mar 2000) |
| sinus petrosus superior | A paired dural venous sinus in the groove along the crest of the petrous temporal bone, connecting the cavernous sinus with the termination of the transverse sinus or beginning of the sigmoid sinus. Synonym: sinus petrosus superior. (05 Mar 2000) |
| sinus sagittalis superior | An unpaired dural venous sinus in the sagittal groove, beginning at the foramen caecum and terminating at the confluence of sinuses where it merges with the straight sinus; receives the superior cerebral veins and has lateral extensions, the lateral venous lacunae. Synonym: sinus sagittalis superior, superior longitudinal sinus. Tarsal sinus, a hollow or canal formed by the groove of the talus and the interosseous groove of the calcaneus which is occupied by the interosseous talocalcaneal ligament. Synonym: sinus tarsi, tarsal canal. (05 Mar 2000) |
| skeleton of free superior limb | The bones of the upper limb except the scapula and clavicle, i.e., all upper limb bones including and distal to the humerus. (05 Mar 2000) |
| spina iliaca anterior superior | The anterior extremity of the iliac crest, which provides attachment for the inguinal ligament and the sartorius muscle. Synonym: spina iliaca anterior superior. (05 Mar 2000) |
| spina iliaca posterior superior | The posterior extremity of the iliac crest, the uppermost point of attachment of the sacrotuberous and posterior sacroiliac ligaments; a readily apparent dimple occurs in the skin overlying the posterior superior iliac spine which is clinically useful as an indication of the level of the S-2 vertebra, the level of the inferior limit of the subarachnoid space. Synonym: spina iliaca posterior superior. (05 Mar 2000) |
| sternocleidomastoid branch of superior thyroid artery | <anatomy, artery> Branch of superior thyroid artery to sternocleidomastoid muscle. Synonym: ramus sternocleidomastoideus arteriae thyroideae superioris. (05 Mar 2000) |
| nervus cardiacus cervicalis superior | <anatomy, nerve> The uppermost of the cardiopulmonary splanchnic nerves which arises from the lower part of the superior cervical ganglion and passes down to form, with branches of the vagus, the cardiac plexus. Synonym: nervus cardiacus cervicalis superior. (05 Mar 2000) |
| nervus cutaneus brachii lateralis superior | <anatomy, nerve> The terminal branch of the axillary nerve supplying the skin over the lower portion of the deltoid and for a distance below its insertion. Synonym: nervus cutaneus brachii lateralis superior, upper lateral cutaneous nerve of arm. (05 Mar 2000) |