| superior haemorrhoidal plexus | The autonomic plexus derived as a continuation of the inferior mesenteric plexus that accompanies the superior rectal artery. Synonym: plexus rectalis superior, superior haemorrhoidal plexus. (05 Mar 2000) |
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| superior mesenteric plexus | An autonomic plexus, a continuation of the abdominal aortic plexus, sending nerves to the intestines and forming with the vagus the subserous, myenteric, and submucous plexus's; this periarterial plexus is so dense that it results in the appearance of a characteristic perivascular "collar" distinguishing the superior mesenteric artery from the superior mesenteric vein in several imaging modalities such as with ultra sound. Synonym: plexus mesentericus superior. (05 Mar 2000) |
| superior rectal plexus | The autonomic plexus derived as a continuation of the inferior mesenteric plexus that accompanies the superior rectal artery. Synonym: plexus rectalis superior, superior haemorrhoidal plexus. (05 Mar 2000) |
| superior thyroid plexus | An autonomic plexus on the artery of the same name, derived from the external carotid plexus. Synonym: plexus thyroideus superior. (05 Mar 2000) |
| superior trunk of brachial plexus | The nerve bundle formed by the union of the ventral rami of the fifth and sixth cervical nerves and some fibres from the fourth; it contributes fibres to the posterior and lateral cords (fasciculi) of the brachial plexus. Synonym: truncus superior plexus brachialis. (05 Mar 2000) |
| deep cardiac plexus | The deeper part of the cardiac plexus. Synonym: plexus cardiacus profundus. (05 Mar 2000) |
| 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) |
| deferential plexus | An autonomic plexus on the seminal vesicle and ampulla of the ductus deferens on each side, derived from the inferior hypogastric plexus. Synonym: plexus deferentialis. (05 Mar 2000) |
| suprarenal plexus | An autonomic plexus formed mainly by branches from the coeliac ganglion, lying at the hilus of the suprarenal gland. Synonym: plexus suprarenalis. (05 Mar 2000) |
| iliac plexus | The autonomic plexus lying on the iliac arteries, derived from the aortic plexus. Synonym: plexus iliaci. (05 Mar 2000) |
| Quenu's haemorrhoidal plexus | Lymphatic plexus's in the skin about the anus. (05 Mar 2000) |
| infraclavicular part of brachial plexus | The part of the brachial plexus that extends from the level of the clavicle downward into the axilla; it includes the cords of the plexus and their branches. Synonym: pars infraclavicularis plexus brachialis. (05 Mar 2000) |
| inguinal plexus | A lymphatic plexus formed of 10 to 15 lymph nodes with their connecting vessels lying superficially near the termination of the great saphenous vein and more deeply along the femoral artery and vein. See: superficial inguinal lymph nodes. Synonym: plexus inguinalis. (05 Mar 2000) |
| intermesenteric plexus | The part of the aortic plexus lying between the superior and inferior mesenteric plexus's. Synonym: plexus intermesentericus. (05 Mar 2000) |
| internal carotid (nervous) plexus | An autonomic plexus surrounding the internal carotid artery in the carotid canal and cavernous sinus, and sending branches to the tympanic plexus, sphenopalatine ganglion, abducens and oculomotor nerves, the cerebral vessels, and the ciliary ganglion. Synonym: internal carotid venous plexus. (05 Mar 2000) |