| pelvic plexus | One of the bilateral autonomic plexus in the pelvis distributed to the pelvic viscera; it receives the hypogastric nerves and the pelvic splanchnic nerves. Synonym: plexus hypogastricus inferior, plexus pelvinus, pelvic plexus. (05 Mar 2000) |
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| Meissner's plexus | A gangliated plexus of unmyelinated nerve fibres, derived chiefly from the superior mesenteric plexus, ramifying in the intestinal submucosa. Synonym: plexus submucosus, Meissner's plexus, Remak's plexus. (05 Mar 2000) |
| cervical plexus | A network of nerve fibres originating in the upper four cervical spinal cord segments. The cervical plexus distributes cutaneous nerves to parts of the neck, shoulders, and back of the head, and motor fibres to muscles of the cervical spinal column, infrahyoid muscles, and the diaphragm. (12 Dec 1998) |
| meningeal plexus | A nerve plexus on the cerebral meninges, derived from the external carotid plexus. Synonym: plexus meningeus. (05 Mar 2000) |
| periarterial plexus | An autonomic plexus that accompanies an artery, surrounding it in a network of autonomic nerve fibres. Synonym: plexus periarterialis. (05 Mar 2000) |
| periarterial plexus of maxillary artery | <anatomy, artery> An autonomic plexus on the maxillary artery derived from the external carotid plexus. Synonym: internal maxillary plexus, maxillary plexus, plexus maxillaris internus. (05 Mar 2000) |
| periarterial plexus of vertebral artery | <anatomy, artery> A plexus of autonomic nerves on the vertebral artery derives from the subclavian plexus. Synonym: plexus vertebralis, vertebral plexus. (05 Mar 2000) |
| pharyngeal plexus | The plexus of nerves including branches of the glossopharyngeal, vagus, and accessory nerves (cranial root), that lies along the posterior wall of the pharynx, a venous plexus on the posteriolateral walls of the pharynx, emptying through the pharyngeal veins into the internal jugular. Synonym: plexus pharyngeus. (05 Mar 2000) |
| ciliary ganglionic plexus | An autonomic plexus lying on the ciliary muscle, derived from the oculomotor, trigeminal, and sympathetic. Synonym: plexus gangliosus ciliaris. (05 Mar 2000) |
| middle sacral plexus | A lymphatic plexus formed of lymph nodes and connecting vessels situated chiefly in the mesorectum anterior and inferior to the sacral promontory. Synonym: plexus sacralis medius. (05 Mar 2000) |
| middle trunk of brachial plexus | The continuation of the ventral ramus of the seventh cervical nerve; it contributes fibres to the posterior and lateral cords (fasciculi) of the brachial plexus. Synonym: truncus medius plexus brachialis. (05 Mar 2000) |
| phrenic plexus | Plexus phrenicus, an autonomic plexus surrounding the inferior phrenic artery. (05 Mar 2000) |
| Walther's plexus | <anatomy> The portion of the internal carotid plexus in the cavernous sinus. Synonym: plexus cavernosus, Walther's plexus. (05 Mar 2000) |
| coccygeal plexus | A small plexus formed by the fifth sacral and the coccygeal nerves; it gives origin to the anococcygeal nerves. Synonym: plexus coccygeus. (05 Mar 2000) |
| coeliac (lymphatic) plexus | A network formed of the efferent and afferent lymphatic vessels of the coeliac lymph nodes and related to the coeliac trunk; the afferent lymphatic vessels bring lymph primarily from structures served by the coeliac artery (stomach, duodenum, pancreas, and visceral aspect of the liver); the efferent vessels drain into the cisterna chyli/thoracic duct via the intestinal lymph trunks. (05 Mar 2000) |