| straight part of cricothyroid muscle | <anatomy> See: cricothyroid muscle. (05 Mar 2000) |
|---|---|
| subcutaneous part of external anal sphincter | pars subcutanea musculi sphincteri ani externi, subcutaneous portion of external anal sphincter |
| sublenticular part of internal capsule | The part of the internal capsule below the caudal third of the lentiform nucleus that contains the auditory radiation as well as that part of the optic radiation representing the upper part of the contralateral half of the binocular visual field. Synonym: pars sublentiformis capsulae internae, sublenticular limb of internal capsule. (05 Mar 2000) |
| suboccipital part of vertebral artery | <anatomy, artery> Paired arteries which supply the muscles of the neck, spinal cord and cerebellum. (27 Sep 1997) |
| superficial part of duodenum | See: duodenum. (05 Mar 2000) |
| superficial part of external anal sphincter | superficial part of external anal sphincter |
| superficial part of parotid gland | superficial part of parotid gland |
| superior border of petrous part of temporal bone | The margin that separates the anterior and posterior surfaces of the petrous part of the temporal bone and the lateral part of the middle cranial fossa from the posterior cranial fossa. Synonym: margo superior partis petrosae ossis temporalis, crest of petrous part of temporal bone. (05 Mar 2000) |
| superior part of diaphragmatic surface of liver | The convex superior portion of the diaphragmatic surface of the liver. Synonym: pars superior faciei diaphragmaticae hepatis. (05 Mar 2000) |
| superior part of duodenum | superior part of duodenum |
| superior part of lingular branch of left pulmonary vein | <anatomy, vein> The vein that drains the superior lingular bronchopulmonary segment of the left lung. Synonym: pars superior rami lingularis venae pulmonis sinistri. (05 Mar 2000) |
| superior part of vestibular ganglion | Rostral part, the superior part of the vestibular ganglion that receives fibres from the maculae of the utricle and the saccule and the ampullae of the anterior and lateral saemicircular ducts. Synonym: pars superior ganglii vestibularis. (05 Mar 2000) |
| superior part of vestibulocochlear nerve | <anatomy, nerve> The vestibular part of the acoustic (8th cranial) nerve. The vestibular nerve fibres arise from neurons of scarpa's ganglion and project peripherally to vestibular hair cells and centrally to the vestibular nuclei of the brainstem. These fibres mediate the sense of balance and head position. (12 Dec 1998) |
| supraclavicular part of brachial plexus | The part of the brachial plexus, including the roots, trunks, and divisions, that gives rise to the dorsal scapular, long thoracic, suprascapular and subclavian nerves. Synonym: pars supraclavicularis plexus brachialis. (05 Mar 2000) |
| sympathetic part | <anatomy, physiology> One of the two divisions of the vertebrate autonomic nervous system (the other being the parasympathetic nervous system). The sympathetic preganglionic neurons have their cell bodies in the thoracic and lumbar regions of the spinal cord and connect to the paravertebral chain of sympathetic ganglia. Innervate heart and blood vessels, sweat glands, viscera and the adrenal medulla. most sympathetic neurons, but not all, use noradrenaline as a post ganglionic neurotransmitter. (19 Jan 1998) |