Tuber cinereum

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Tuber cinereum
Gray724.png
Base of brain (Tuber cinereum visible at center).
Details
Identifiers
Latin tuber cinereum
MeSH D014371
NeuroNames 1782
NeuroLex ID birnlex_1189
TA98 A14.1.08.408
TA2 5673
FMA 62327
Anatomical terms of neuroanatomy

The tuber cinereum is the portion of hypothalamus forming the floor of the third ventricle situated between the optic chiasm, and the mammillary bodies. [1] [2] The tuberal region is one of the three regions of the hypothalamus, the other two being the chiasmatic region and the mamillary region. [1]

Contents

Structure

The tuber cinereum is a convex mass of grey matter, [3] : 495  a ventral/inferior distention of the hypothalamus forming the floor of the third ventricle.[ citation needed ] The portion of the tuber cinereum at the base of the infundibulum (pituitary stalk) is the median eminence; [2] the infundibulum extends ventrally/inferiorly from the median eminence to become continuous with the infundibulum. [3] : 499 

The arcuate nucleus is a part of the tuber cinereum. [3] : 497.e1  The lateral portions of tuber cinereum lodge the lateral tuberal nucleus, and tuberomammillary nucleus. The basolateral aspect of the tuber cinereum often presents slight elevations produced by the underlying lateral tuberal nucleus - the lateral eminence. [1]

Relations

The tuber cinereum is situated caudal to the optic chiasm, medial to the optic tract (which flanks it on either side), and rostral to the two mammillary bodies. [4] is continuous anteriorly with the lamina terminalis, and laterally with the anterior perforated substances.[ citation needed ]

Blood supply

Arterial blood supply to the tuber cinereum is provided by the anterior choroidal artery. [3] : 1464.e62 

Microanatomy

Capillaries of the tuber cinereum are specialized and confluent to enable rapid communication via brain- or blood-borne factors between compartments of the tuber, a capillary system described as the hypophyseal portal system. The subregion of the hypothalamic arcuate nucleus closest to the median eminence contains specialized permeable capillaries surrounded by wide pericapillary spaces, enabling moment-to-moment sensing of circulating blood. [5] [ non-primary source needed ]

Additional images

See also

References

PD-icon.svgThis article incorporates text in the public domain from page 813 of the 20th edition of Gray's Anatomy (1918)

  1. 1 2 3 Braak, Heiko; Braak, Eva (1992), "Chapter 1 Anatomy of the human hypothalamus (Chiasmatic and tuberal region)", The Human Hypothalamus in Health and Disease, Proceedings of the 17th International Summer School of Brain Research, held at the Auditorium of the University of Amsterdam , Progress in Brain Research, vol. 93, Elsevier, pp. 3–16, doi:10.1016/s0079-6123(08)64559-8, ISBN   978-0-444-89538-7, PMID   1480754 , retrieved 2023-08-14
  2. 1 2 Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). Elsevier Australia. p. 470. ISBN   978-0-7295-3752-0.
  3. 1 2 3 4 Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. ISBN   978-0-7020-7707-4. OCLC   1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
  4. ↑ "tuber cinereum". TheFreeDictionary.com. Retrieved 2023-08-14.
  5. ↑ Shaver SW, Pang JJ, Wainman DS, Wall KM, Gross PM (March 1992). "Morphology and function of capillary networks in subregions of the rat tuber cinereum". Cell and Tissue Research. 267 (3): 437–48. doi:10.1007/BF00319366. PMID   1571958. S2CID   27789146.
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