In the lateral part of the tuber cinereum is a nucleus of nerve cells, the basal optic nucleus of Meynert. Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... NeuroNames is a system of nomenclature for the brain and related structures. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... Elseviers logo Elsevier, the worlds largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. ... The tuber cinereum is a hollow madda of gray substance situated between the corpora mammillaria behind, and the optic chiasma in front. ...
The basal nucleus of Meynert (NBM) is involved in production of acetylcholine. A decrease in this production is seen in Alzheimer's disease and Lewy body dementia, leading to a general decrease of mental capacity and learning. Most pharmacological treatments of dementia focus on compencating for a faltering NBM function through artificially increasing acetylcholine levels.
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The preganglionic fibers from this nucleus terminate in the otic ganglion; the postganglionic fibers from the otic ganglion pass to the parotid gland.
The descending branches terminate in the dorsal (medial) vestibular nucleus, the principal nucleus of the vestibular nerve.
The axons arise from the nucleus of the oculomotor nerve and pass in bundles through the posterior longitudinal bundle, the tegmentum, the red nucleus and the medial margin of the substantia nigra in a series of curves and finally emerge from the oculomotor sulcus on the medial side of the cerebral peduncle.
Most of them have their origin in a nucleus, the nucleus of the posterior commissure (nucleus of Darkschewitsch), which lies in the central gray substance of the upper end of the cerebral aqueduct, in front of the nucleus of the oculomotor nerve.
The red nucleus and the substantia nigra are prolonged into its lower part; in front it is continuous with the substantia innominata of Meynert, medially with the gray substance of the floor of the third ventricle.
The apical and basal parts of the cell give off dendrites; the apical dendrite is directed toward the surface, and ends in the molecular layer by dividing into numerous branches, all of which may be seen, when prepared by the silver or methylene-blue method, to be studded with projecting bristle-like processes.
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