| nervi lumbales | Five bilaterally-paired nerves emerging from the lumbar portion of the spinal cord; the first four nerves enter into the formation of the lumbar plexus, the fourth and fifth into that of the sacral plexus. Synonym: nervi lumbales. (05 Mar 2000) |
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| nervi nervorum | Nerves distributed to the sheaths of nerve trunks. (05 Mar 2000) |
| nervi olfactorii | Collective term denoting the numerous olfactory filaments: slender fascicles each composed of the thin, unmyelinated axons of 8 to 12 of the bipolar olfactory receptor cells in the olfactory portion of the nasal mucosa; the olfactory filaments pass through the cribriform plate of the ethmoid bone and enter the olfactory bulb, where they terminate in synaptic contact with mitral cells, tufted cells, and granule cells. See: olfactory tract. Synonym: nervi olfactorii, fila olfactoria, first cranial nerve, nerve of smell, olfactory fila. (05 Mar 2000) |
| nervi palatini minores | Usually two, these nerves emerge through the lesser palatine foramina and supply the mucosa and glands of the soft palate and uvula; they are branches of the pterygopalatine ganglion and contain postsynaptic parasympathetic and sensory fibres of the maxillary nerve. Synonym: nervi palatini minores. (05 Mar 2000) |
| nervi pelvici splanchnici | Visceral branches from the ventral primary rami of the second, third, and fourth sacral spinal nerves that join the inferior hypogastric plexus, to form the pelvic plexuses to and from which they convey presynaptic parasympathetic and sensory fibres, respectively. Synonym: nervi pelvici splanchnici, nervi erigentes. (05 Mar 2000) |
| nervi perineales | The superficial terminal branches of the pudendal nerve, supplying most of the muscles of the perineum (deep branch) as well as the skin of that region (superficial branch). Synonym: nervi perineales. (05 Mar 2000) |
| nervi pterygopalatini | <anatomy, nerve> The ganglionic branches, two short sensory branches of the maxillary nerve in the pterygopalatine fossa, the fibres of which pass through the pterygopalatine ganglion without synapse. Synonym: radix sensoria ganglii pterygopalatini, rami ganglionici nervi maxillaris, rami ganglionares, nervi pterygopalatini, nervi sphenopalatini, pterygopalatine nerves, sensory root of pterygopalatine ganglion. (05 Mar 2000) |
| nervi rectales inferiores | Several branches of the pudendal nerve that pass to the external and sphincter anoderm and skin of the anal region. Synonym: nervi rectales inferiores, inferior haemorrhoidal nerves. (05 Mar 2000) |
| nervi sacrales | Five nerves issuing from the sacral foramina on either side; the ventral branches of the first three enter into the formation of the sacral plexus, and the last two into the coccygeal plexus. Synonym: nervi sacrales. (05 Mar 2000) |
| nervi scrotales anteriores | The branches of the ilioinguinal nerve, distributed to the skin of the root of the penis, mons pubis, adjacent thigh and the anterior surface of the scrotum. Synonym: nervi scrotales anteriores. (05 Mar 2000) |
| nervi scrotales posteriores | Several terminal branches of the superficial perineal nerve supplying the skin of the posterior portion of the scrotum, corresponding to the posterior labial nerves in the female. Synonym: nervi scrotales posteriores. (05 Mar 2000) |
| nervi sphenopalatini | <anatomy, nerve> The ganglionic branches, two short sensory branches of the maxillary nerve in the pterygopalatine fossa, the fibres of which pass through the pterygopalatine ganglion without synapse. Synonym: radix sensoria ganglii pterygopalatini, rami ganglionici nervi maxillaris, rami ganglionares, nervi pterygopalatini, nervi sphenopalatini, pterygopalatine nerves, sensory root of pterygopalatine ganglion. (05 Mar 2000) |
| nervi spinales | The 31 paired peripheral nerves formed by the union of the dorsal and ventral spinal roots from each spinal cord segment. The spinal nerve plexuses and the spinal roots are also included. (12 Dec 1998) |
| nervi splanchnici lumbales | Branches from the lumbar sympathetic trunks that pass anteriorly to convey presynaptic sympathetic fibres to, and visceral afferents from, the coeliac, intermesenteric, aortic, and superior hypogastric plexuses. Synonym: nervi splanchnici lumbales. (05 Mar 2000) |
| nervi splanchnici sacrales | Branches from the sacral sympathetic trunk that pass to the inferior hypogastric plexus; part of the abdominopelvic (sympathetic) splanchnic nerves, but their specific function is unclear. They tend to be confused with the pelvic splanchnic nerves, which are much more significant structures. Synonym: nervi splanchnici sacrales. (05 Mar 2000) |