alar plate

Examples of alar plate in the following topics:

• Embryonic Development of the Brain

  • The neural plate folds outwards to form the neural groove.
  • The anterior (front) part of the neural tube is called the basal plate; the posterior (rear) part is called the alar plate.
  • In the fifth week, the alar plate of the prosencephalon expands to form the cerebral hemispheres (the telencephalon).
  • The basal plate becomes the diencephalon.
  • The rhombencephalon folds posteriorly, which causes its alar plate to flare and form the fourth ventricle of the brain.

• Neurulation

  • This strip is called the neural plate, and it is the origin of the entire nervous system.
  • The neural plate folds outwards to form the neural groove.
  • The anterior (ventral or front) part of the neural tube is called the basal plate; the posterior (dorsal or rear) part is called the alar plate.
  • In general, it entails the cells of the neural plate forming a cord-like structure that migrates inside the embryo and hollows to form the tube.
  • Transverse sections that show the progression of the neural plate into the neural tube.

• Pons

  • The alar plate produces sensory neuroblasts, which will give rise to the solitary nucleus and its special visceral afferent column, the cochlear and vestibular nuclei (which form the special somatic afferent fibers of the vestibulocochlear nerve), the spinal and principal trigeminal nerve nuclei (which form the general somatic afferent column of the trigeminal nerve), and the pontine nuclei, which is involved in motor activity.
  • Basal plate neuroblasts give rise to the abducens nucleus (forms the general somatic efferent fibers), the facial and motor trigeminal nuclei (form the special visceral efferent column), and the superior salivatory nucleus, which forms the general visceral efferent fibers of the facial nerve.

• Medulla Oblongata

  • The final neuroblasts from the alar plate of the neural tube produce the sensory nuclei of the medulla.
  • The basal plate neuroblasts give rise to the motor nuclei.

• Establishing Body Axes during Development

  • Primary neurulation begins after the neural plate forms.
  • The edges of the neural plate start to thicken and lift upward, forming the neural folds.
  • The center of the neural plate remains grounded, allowing a U-shaped neural groove to form.
  • The dorsal part of the neural tube contains the alar plate, which is primarily associated with sensation.
  • The ventral part of the neural tube contains the basal plate, which is primarily associated with motor (i.e., muscle) control.

• Parallel-Plate Capacitor

  • The parallel-plate capacitor is one that includes two conductor plates, each connected to wires, separated from one another by a thin space.
  • The purpose of a capacitor is to store charge, and in a parallel-plate capacitor one plate will take on an excess of positive charge while the other becomes more negative.
  • where z is the axis perpendicular to both plates.
  • Accordingly, capacitance is greatest in devices with high permittivity, large plate area, and minimal separation between the plates.
  • In a capacitor, the opposite plates take on opposite charges.

• Parallel-Plate Capacitor

  • For the purpose of this atom, we will focus on parallel-plate capacitors .
  • For a parallel-plate capacitor, capacitance (C) is related to dielectric permittivity (ε), surface area (A), and separation between the plates (d):
  • Voltage (V) of a capacitor is related to distance between the plates, dielectric permittivity, conductor surface area, and charge (Q) on the plates:
  • Charges in the dielectric material line up to oppose the charges of each plate of the capacitor.
  • An electric field is created between the plates of the capacitor as charge builds on each plate.

• Capacitance

  • The most common capacitor is known as a parallel-plate capacitor which involves two separate conductor plates separated from one another by a dielectric .
  • The product of length and height of the plates can be substituted in place of A.
  • For a capacitor with plates holding charges of +q and -q, this can be calculated:
  • In a parallel-plate capacitor, this can be simplified to:
  • The dielectric prevents charge flow from one plate to the other.

• Lead Storage Battery

  • Planté plates are still used in some stationary applications, where the plates are mechanically grooved to increase surface area.
  • Each plate consists of a rectangular lead grid.
  • An odd number of plates is usually used, with one more negative plate than positive.
  • Each alternate plate is connected.
  • The discharge process is driven by the conduction of electrons from the negative plate back into the cell at the positive plate in the external circuit.

• Capacitors with Dielectrics

  • A dielectric partially opposes a capacitor's electric field but can increase capacitance and prevent the capacitor's plates from touching.
  • When a dielectric is used, the material between the parallel plates of the capacitor will polarize.
  • The capacitance for a parallel-plate capacitor is given by:
  • Charges in the dielectric material line up to oppose the charges of each plate of the capacitor.
  • An electric field is created between the plates of the capacitor as charge builds on each plate.