Basal plate (neural tube)

Basal plate (neural tube)

Infobox Embryology
Name = Basal plate
Latin = Lamina basalis, basal lamina
GraySubject = 184
GrayPage = 735

Caption = The basal plate (basal lamina) is separated from the alar plate (alar lamina) by the sulcus limitans (unlabeled).
Width = 200

Caption2 =
System = Nervous system
CarnegieStage =
Precursor = Neural tube
GivesRiseTo = Lower motor neurons, interneurons
MeshName =
MeshNumber =
DorlandsPre = l_02
DorlandsSuf = 12475910

In the developing nervous system, the basal plate is the region of the neural tube ventral to the sulcus limitans. It extends from the rostral mesencephalon to the end of the spinal cord and contains primarily motor neurons, whereas neurons found in the alar plate are primarily associated with sensory functions. The cell types of the basal plate include lower motor neurons and four types of interneuron.cite book | author=Bruce M. Carlson | title=Human Embryology and Developmental Biology | publisher=Mosby | location=Saint Louis, MO | year=2004 | edition=2nd edition | id=ISBN 0-323-03649-X]

Initially the left and right sides of the basal plate are continuous, but during neurulation they become separated by the floor plate, a derivative of the notochord. Differentiation of neurons in the basal plate is under the influence of Sonic hedgehog released by ventralizing structures such as the notochord and floor plate.




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  • Basal plate — In anatomy, basal plate may refer to: * the portion of the neural tube ventral to the sulcus limitans; see Basal plate (neural tube) * the portion of the decidua basalis in the placenta; see Basal plate (placenta) * the fused parachordal… …   Wikipedia

  • Neural tube — Transverse section of half of a chick embryo of forty five hours incubation. The dorsal (back) surface of the embryo is towards the top of this page, while the ventral (front) surface is towards the bottom. (Neural tube is in green.) …   Wikipedia

  • basal plate — n an underlying structure: as a) the ventral portion of the neural tube b) the part of the decidua of a placental mammal that is intimately fused with the placenta * * * 1. lamina basalis. 2. the fused parachordal cartilages, precursors of the… …   Medical dictionary

  • basal plate — noun : an underlying structure: as a. : the ventral portion of the neural tube b. : the part of the decidua of a placental mammal that is intimately fused with the placenta c. : the part of a coral corallium immediately below the polyp …   Useful english dictionary

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