Is alar plate sensory or motor?
sensory
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.
What develops from the alar plate?
The alar plate specifically later on becomes the 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 are also developed from this plate.
What neurons are formed by Alar plates?
The two plates are separated by the sulcus limitans.
- Motor neurons: Cells within the basal plate develop into efferent neurons.
- Sensory and interneurons: Cells within the alar plate develop into afferent and interneurons.
What is a basal plate?
Medical Definition of basal plate : 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.
What induces the formation of the alar and basal plates?
Brainstem Division The early post- neurulation neural tube develops into dorsal and ventral halves – the alar and basal plates respectively.
What do basal and alar plates become?
The basal and alar plates of the brainstem extend from the medulla rostrally into the developing pons. The cranial nerve motor nuclei found in the pons (trigeminal, abducens, facial, and superior salivatory) originate from the basal plate and are located medial to the sulcus limitans (Fig.
What is basal plate in placenta?
The basal plate is a synonym for the maternal side of the placenta. The fetal side of the placenta is termed the chorionic plate. Some pathologies and processes are localized to the basal plate, and evaluation of the basal plate is a part of placental grading.
What is chorionic plate and basal plate?
The chorionic and basal plates form the fetal- and maternal-facing surfaces of the placenta, respectively. The umbilical cord is attached to the chorionic plate, and branches of the umbilical arteries ramify over the surface before penetrating the plate and entering the stem villi arising from the undersurface.
What does the basal plate develop into?
Cells in the basal plate become efferent (motor) neurons and form the ventral (anterior) horn of the spinal cord. The two ventral horns bulge ventrally to create ventral median fissure. The dorsal horns merge to create the dorsal median septum. The lumen of the neural tube becomes the central canal of the spinal cord.
What is chorionic plate?
Background: The chorionic plate forms the fetal side of the placental disc, and its proper growth and development is important to the formation of a normal placenta. The development and structure of the chorionic plate has received little attention.