Question

What are the 4 groups of sensory relay nuclei which the alar plate contains?

Answer 1

Alar plate:

1. The alar plate is a neural structure in the embryonic nervous system.
2. Which is the part of the dorsal side of the neural tube into which normal somatic and normal intestinal sensory impulses are transmitted.

Four groups of sensory relay nuclei:

Common somatic efferent group:

1. It receives impulses from the head and face.
2. Adjacent fibers arise from neurons present in the sensory ganglia.
3. It is first found in all spinal nerves except the cranial nerve.

Common visceral efferent group:

1. It receives intracellular information from the gastrointestinal tract and the heart.
2. It is present in the organs of the abdomen, pelvis, and thorax.
3. An example of its function is the information of pain from the digestive system.
4. It manages sensory impulses from internal organs, blood vessels, and glands to the central nervous system.

Special somatic afferent group:

1. This group receives impulses from the ear through the vestibulocochlear nerve.
2. It carries sensory impulses from special sensations such as balance, hearing, and vision.

Special visceral afferent group:

1. The group receives impulses from the epiglottis, the taste buds of the tongue, the oropharynx, and the palate.
2. It consists of neurons in the tenth, ninth and seventh cranial nerves.
3. The dendritic zone is limited to specific receptors for taste.
4. The dendritic nerve of the first cranial nerve is localized in the caudal nasal mucosa for olfactory.