Anatomical structure of the developing nervous system
Alar plate
Diagram to illustrate the alar and basal laminæ of brain vesicles.
aged about four and a half weeks.
Details
Carnegie stage
13
Precursor
Neural tube
Gives rise to
dorsal gray of the spinal cord, and develops into the sensory nuclei of cranial nerves V, VII, VIII, IX, and X. The inferior olivary nucleus, mesencephalic nucleus of V, and main sensory nucleus of V
Identifiers
Latin
lamina dorsolateralis, lamina alaris
TE
plate_by_E5.14.1.0.1.0.4 E5.14.1.0.1.0.4
Anatomical terminology
[edit on Wikidata]
The alar plate (or alar lamina) is a neural structure in the embryonic nervous system, part of the dorsal side of the neural tube, that involves the communication of general somatic and general visceral sensory impulses. The caudal part later becomes the sensory axon part of the spinal cord.
The alar plate specifically later on becomes the dorsal gray of the spinal cord, and also develops into the sensory nuclei of cranial nerves V, VII, VIII, IX, and X. The inferior olivary nucleus, mesencephalic nucleus of V, and main sensory nucleus of V are also developed from this plate. The cerebellum also develops from the alar plate, particularly from the rhombic lip. This is considered an exception to the general differentiation scheme from the alar plate, as the alar plate generally gives rise to sensory derivatives.[1]
^Siegel, Allan (2006). Essential Neuroscience. Baltimore, MD: Lippincott Williams & Wilkins. ISBN 0781750776.
The alarplate (or alar lamina) is a neural structure in the embryonic nervous system, part of the dorsal side of the neural tube, that involves the communication...
canal of the spinal cord. The alarplate and the basal plate are separated by the sulcus limitans. Additionally, the floor plate also secretes netrins. The...
hydrocephalus. The tectum is derived in embryonic development from the alarplate of the neural tube. The mesencephalon is considered part of the brainstem...
rhombencephalon and gives rise to two structures: the pons and the cerebellum. The alarplate produces sensory neuroblasts, which will give rise to the solitary nucleus...
Neuroblasts from the alarplate of the neural tube at this level will produce the sensory nuclei of the medulla. The basal plate neuroblasts will give...
floor plate of the incipient neural tube also secretes SHH. After closure, the neural tube forms a basal or floor plate and a roof or alarplate in response...
ventral part of the neural tube is called the basal plate; the dorsal part is called the alarplate. The hollow interior is called the neural canal. By...
tube contains the alarplate, which is associated primarily with sensation. The ventral part of the neural tube contains the basal plate, which is primarily...
The major alar cartilage (greater alar cartilage) (lower lateral cartilage) is a thin, flexible plate, situated immediately below the lateral nasal cartilage...
induces the roof plate to begin to secrete BMP, which will induce the alarplate to develop sensory neurons. The alarplate and the basal plate are separated...
plate of the prosencephalon. The alarplate of the prosencephalon expands to form the cerebral hemispheres (the telencephalon) whilst its basal plate...
g., the floor plate), establishing a gradient of highly concentrated Shh in the basal plate and less concentrated Shh in the alarplate. Under the influence...
ventral part of the neural tube is called the basal plate; the dorsal part is called the alarplate. The hollow interior is called the neural canal, and...
is not required for their maintenance and SHH signaling from the MDO/alarplate is sufficient for the maturation of prethalamic and thalamic territory...
rhombomeres. The cerebellum arises from two rhombomeres located in the alarplate of the neural tube, a structure that eventually forms the brain and spinal...
the visual center in the non-mammalian brain which develops from the alarplate of the mesencephalon. In these other vertebrates the connections from...
locations where most of the interneurons are found. In the mouse's dorsal alarplate, six progenitor domains give rise to dI1-dI6 neurons and two classes of...
nasal cartilage, major alar cartilage (greater alar cartilage, or cartilage of the aperture), minor alar cartilage (lesser alar cartilage, sesamoid, or...
tip subunit columellar subunit right alar base subunit right alar wall subunit left alar wall subunit left alar base subunit dorsal subunit right dorsal...
apex, or tip, the framework is of cartilage. The major alar cartilages are thin, U-shaped plates of cartilage on each side of the nose that form the lateral...
of tectonic plates, see Geological history of Earth. Plate reconstruction is the process of reconstructing the positions of tectonic plates relative to...
medial crura of the major alar cartilages by fibrous tissue. Its posterior margin is connected with the perpendicular plate of the ethmoid; its inferior...
defined laterally by the lateral crus and alar fibrofatty tissue, medially by the medial crus of the alar cartilage and the nasal septum and the distal...
the anterior and posterior spinal arteries, and the tectorial membrane and alar ligaments. The superior angle of the occipital bone articulates with the...
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