File:Human brainstem anterior view description 2.JPG
Human_brainstem_anterior_view_description_2.JPG (347 × 485 pixels, file size: 31 KB, MIME type: image/jpeg)
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[edit]DescriptionHuman brainstem anterior view description 2.JPG |
Human brainstem - anterior view - cerebral nerves II. N. opticus - The Optic nerves (II) are large & join at the midline to form the optic chiasm, then continue laterally as the optic tracts. The optic nerve is not a true nerve but rather a CNS tract. III. N. oculomotorius - The Oculomotor nerves (III) emerge from a depression in the midbrain, the interpeduncular fossa, just caudal to the optic chiasm. IV. N. trochlearis - The Trochlear nerves (IV) are small & are seen on the lateral surface of the midbrain. They are the only nerves which exit from the posterior side of the brain. V. N. trigeminus - The Trigeminal nerves (V) are large and emanate from the lateral surface of the pons. VI. N. abducens - The Abducens nerves (VI) exit near the midline from the inferior pontine sulcus which separates the pons from the medulla. VII. N. facialis - Moving laterally in the inferior pontine sulcus, the Facial nerves (VII) can be seen. VIII. N. vestibulocochlearis - Slightly lateral to the facial nerve is the Vestibulocochlear nerve (VIII). IX. N. glossopharyngeus - The postolivary sulcus is a groove running rostrocaudally on the lateral surface of the medulla. From this sulcus pass the small Glossopharyngeal nerves (IX) rostrally and... X. N. vagus - ...the much larger Vagus nerves (X) caudally. XI. N. accessorius - The Spinal Accessory nerves (XI) exit the cervical cord then pass rostrally through the foramen magnum to exit the cranial vault with the lossopharyngeal and vagus nerves. XII. N. hypoglossus - The Hypoglossal nerves (XII) exit the medulla via the preolivary sulcus.
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Date | |
Source | http://www.healcentral.org/healapp/showMetadata?metadataId=40566 (Internet Archive of file description page) |
Author |
John A Beal, PhD Dep't. of Cellular Biology & Anatomy, Louisiana State University Health Sciences Center Shreveport |
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current | 18:10, 24 June 2006 | 347 × 485 (31 KB) | Patho (talk | contribs) | {{Information| |Description='''Human brainstem - anterior view - cerebral nerves''' II. N. opticus - The Optic nerves (II) are large & join at the midline to form the optic chiasm, then continue laterally as the optic tracts. The optic nerve is not a |
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