| papilla nervi optici | The portion of the optic nerve seen in the fundus with the ophthalmoscope. It is formed by the meeting of all the retinal ganglion cell axons as they enter the optic nerve. Because the retina at the optic disk has no photoreceptors there is a corresponding blind spot in the visual field. (12 Dec 1998) |
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| vena comitans nervi hypoglossi | Runs with the hypoglossal nerve below and lateral to the hyoglossus muscle, emptying usually into the lingual vein. Synonym: accompanying vein of hypoglossal nerve. (05 Mar 2000) |
| geniculum nervi facialis | <anatomy, nerve> A rectangular bend of the facial nerve in the facial canal where it turns posterior in the medial wall of the middle ear (external geniculum), complex loop of facial nerve fibres around the abducens nucleus (internal geniculum). Synonym: geniculum nervi facialis. (05 Mar 2000) |
| genu nervi facialis | <anatomy, nerve> The curve which the fibres of the root of the facial nerve describe around the abducens nucleus in the pontine tegmentum; the internal genu of the facial nerve. Synonym: genu nervi facialis. (05 Mar 2000) |
| pars cochlearis nervi vestibulocochlearis | <anatomy, nerve> The cochlear part of the acoustic (8th cranial) nerve. The cochlear nerve fibres originate from neurons of the spiral ganglion and project peripherally to cochlear hair cells and centrally to the cochlear nuclei of the brainstem. They mediate the sense of hearing. (12 Dec 1998) |
| pars intracanaliculus nervi optici | <anatomy, nerve> The part of the optic nerve lying within the optic canal. Synonym: pars intracanaliculus nervi optici. (05 Mar 2000) |
| pars intracranialis nervi optici | <anatomy, nerve> The portion of the optic nerve between the optic canal and the optic chiasm. Synonym: pars intracranialis nervi optici. (05 Mar 2000) |
| pars intralaminaris nervi optici | <anatomy, nerve> The portion of the optic nerve as it passes through the lamina cribrosa of the sclera. Synonym: pars intralaminaris nervi optici. (05 Mar 2000) |
| pars intraocularis nervi optici | <anatomy, nerve> The part of the optic nerve within the eye; it is divided into intralaminar, postlaminar, and prelaminar parts. Synonym: pars intraocularis nervi optici. (05 Mar 2000) |
| pars orbitalis nervi optici | <anatomy, nerve> The part of the optic nerve between the eye and the optic canal. Synonym: pars orbitalis nervi optici. (05 Mar 2000) |
| pars postlaminaris nervi optici | <anatomy, nerve> The portion of the optic nerve posterior to the lamina cribrosa of the sclera. Synonym: pars postlaminaris nervi optici. (05 Mar 2000) |
| pars prelaminaris nervi optici | <anatomy, nerve> The portion of the optic nerve anterior to the lamina cribrosa of the sclera. Synonym: pars prelaminaris nervi optici. (05 Mar 2000) |
| pars vestibularis nervi vestibulocochlearis | <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) |
| circulus vasculosus nervi optici | <anatomy, nerve> A network of branches of the short ciliary arteries on the sclera around the point of entrance of the optic nerve. Synonym: circulus vasculosus nervi optici, circulus arteriosus halleri, circulus zinnii, Haller's circle, Zinn's corona, Zinn's vascular circle. (05 Mar 2000) |
| plica nervi laryngei | <anatomy, nerve> The slight fold of mucosa in the piriform recess of the pharynx that encloses the superior laryngeal nerve. Synonym: plica nervi laryngei, fold of laryngeal nerve. (05 Mar 2000) |