File:Human caudal brainstem posterior view description.JPG
Human_caudal_brainstem_posterior_view_description.JPG (344 × 475 pixels, file size: 20 KB, MIME type: image/jpeg)
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[edit]DescriptionHuman caudal brainstem posterior view description.JPG |
Human caudal brainstem - posterior view
In the caudal Medulla, several structures are seen. The Posterior Median Sulcus is on the midline. The Posterior Intermediate sulcus divides the Fasciculus Gacilis (long & slender) and Fasciculus Cuneatus (wedge shaped), and the Posterolateral Sulcus separates the Fasciculus Cuneatus from the more lateral swelling, the Tuberculum Cinereum (Spinal Nucleus of V). The Fasciculus Gracilis terminates rostrally in a swelling - the Tuberculum (Nucleus) Gracilis and the Fasciculus Cuneatus terminates in the Tuberculum (Nucleus) Cuneatus. A swelling on either side of the Posterior Median Sulcus called the Median Eminence is present from the rostral medulla through the pons. In the caudal pons a small rounded elevation in the median eminence, the Facial Colliculus (Motor fibers of VII passing over the Nu of VI ) can be seen. Lateral to the median eminence at the junction between the medulla & pons is the Vestibular Area (Vestibular Nuclei), and lateral to this is the Auditory Area (Dorsal Cochlear Nucleus). The Sulcus Limitans separates the Median Eminence from the Vestibular Area. Three V-shaped swellings can be seen in the caudal portion of the fossa. These are from medial to lateral: Hypoglossal Trigone (Motor Nu XII), Vagal Trigone (Dorsal Motor Nu X), Area Postrema (Emetic Center). Rostral to the tuberculum gracilis is the floor of the 4th ventricle or Rhomboid Fossa which extends from the mid-medulla to the mid to rostral Pons. The caudal most point of the ventricle is called the Obex.
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Date | |
Source | http://www.healcentral.org/healapp/showMetadata?metadataId=40566 |
Author |
John A Beal, PhD Dep't. of Cellular Biology & Anatomy, Louisiana State University Health Sciences Center Shreveport |
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current | 23:09, 23 June 2006 | 344 × 475 (20 KB) | Patho (talk | contribs) | ||
22:49, 23 June 2006 | 344 × 475 (20 KB) | Patho (talk | contribs) | {{Information| |Description= '''Human caudal brainstem - posterior view''' # Sulcus medianus # Eminentia medialis # Colliculus facialis (Motor fibers of VII passing over Motor Nucleus of VI) # Area vestibularis # Area auditoria (Nucleus cochlearis dorsa |
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