Lamina terminalis

Lamina terminalis

Median sagittal section of brain of human embryo of three months. (Lamina terminalis labeled at center left.)

Median sagittal section of brain of human embryo of four months. (Lamina terminalis labeled at center right.)
Details
Identifiers
Latin Lamina terminalis
MeSH A08.186.211.577.482
NeuroNames hier-190
TA A14.1.08.419
FMA 61975

Anatomical terms of neuroanatomy

The median portion of the wall of the fore-brain vesicle consists of a thin lamina, the lamina terminalis, which stretches from the Interventricular foramen (Foramen of Monro) to the recess at the base of the optic stalk and contains the organum vasculosum of the lamina terminalis, which regulates the osmolarity of the blood.

The lamina terminalis can be opened via endoscopic neurosurgery in an attempt to create a path that cerebrospinal fluid can flow through when a person suffers from hydrocephalus and when it is not possible to perform an Endoscopic third ventriculostomy,[1] but the effectiveness of this technique is not certain.[2]

This is the rostral end (tip) of the neural tube (embryological central nervous system) in the early weeks of development. Failure of the lamina terminalis to close properly at this stage of development will result in anencephaly or meroencephaly.

Additional images

See also

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

  1. ↑ Oertel, J. M.; Vulcu, S; Schroeder, H. W.; Konerding, M. A.; Wagner, W; Gaab, M. R. (2010). "Endoscopic transventricular third ventriculostomy through the lamina terminalis". Journal of Neurosurgery 113 (6): 1261–9. doi:10.3171/2010.6.JNS09491. PMID 20707616.
  2. ↑ Komotar, R. J.; Hahn, D. K.; Kim, G. H.; Starke, R. M.; Garrett, M. C.; Merkow, M. B.; Otten, M. L.; Sciacca, R. R.; Connolly Jr, E. S. (2009). "Efficacy of lamina terminalis fenestration in reducing shunt-dependent hydrocephalus following aneurysmal subarachnoid hemorrhage: A systematic review. Clinical article". Journal of Neurosurgery 111 (1): 147–54. doi:10.3171/2009.1.JNS0821. PMID 19284236.

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