mamillary body
Noun: * Mamillary body: One of a pair of small, round, protuberant structures located on the ventral (underside) surface of the brain, specifically forming part of the hypothalamus. They are the terminal points for the anterior columns (arches) of the fornix, a major neural pathway, and are involved in memory processes.
The term "mamillary body" is used exclusively in anatomical, neurological, and medical contexts to refer to this specific brain structure. It is typically used in the singular when referring to one of the two structures, and in the plural ("mamillary bodies") when referring to the pair. * Damage to the mamillary bodies is often associated with certain types of amnesia, such as in Korsakoff's syndrome. * The neurosurgeon carefully avoided the mamillary body during the procedure. * The fornix projects to and terminates in the mamillary bodies.
- Clinical Relevance: The mamillary bodies are a critical component of the Papez circuit, a neural pathway involved in the consolidation and recall of episodic memory. Their dysfunction is a hallmark of pathological conditions like Wernicke-Korsakoff syndrome.
- Atrophy of the mamillary bodies is a key radiological finding in patients with chronic alcoholism and memory impairment.
- Mammillary body: An alternative, equally correct spelling. The double 'm' is common in medical literature.
- Corpus mamillare: The Latin anatomical term.
- Mamillary: (Adjective) Describing something shaped like a small breast or nipple, or relating to the mamillary body.
- The mamillary region of the hypothalamus.
- Mammillary body
- Corpus mamillare (Latin)
- Mamillary body syndrome: A clinical condition resulting from damage to these structures, characterized primarily by anterograde amnesia.
- Mamillothalamic tract: The major efferent (output) pathway from the mamillary bodies to the anterior thalamic nuclei.
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one of two small round structures on the undersurface of the brain that form the terminals of the anterior arches of the fornix
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