FAQ: Which Of The Following Structures Is The Richest In Lipid Content?

Where are the Neurosomas of the posterior root located where are the Neurosomas of the anterior root?

Where are the neurosomas of the anterior root? The neurosomas (cell bodies of the neurons) of the posterior root are located in the posterior root ganglion. This is a small enlargement (swelling) located on the posterior nerve root inside the spine just before the nerve leaves the spinal nerve canal.

Which of the following is not considered a region of the spinal cord?

pelvic region is not considered a region of the spinal cord.

Which of the following are located within the gray matter?

The answer is C. Neurosomas, dendrites, and proximal parts of axons of neurons. Gray matter is a key component in the central nervous system. It is called gray matter because it is actually brownish-gray in colour as it contains numerous nerve-cell bodies.

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What keeps individual nerve fibers insulated from one another?

1. About half of all axons contain myelin, which is a white substance made up of fat and protein, that insulates and protects them and speeds impulses along. 2. Myelin tends to be found on axons that carry impulses relatively long distances.

What is the most common type of neuron?

Interneurons. Interneurons are neural intermediaries found in your brain and spinal cord. They’re the most common type of neuron. They pass signals from sensory neurons and other interneurons to motor neurons and other interneurons.

How many total spinal nerves are there?

In total, there are 31 pairs of spinal nerves, grouped regionally by spinal region. More specifically, there are eight cervical nerve pairs (C1-C8), twelve thoracic nerve pairs (T1-T12), five lumbar nerve pairs (L1-L5), and a single coccygeal nerve pair.

Which spinal nerves affect which parts of the body?

The nerves of the cervical spine go to the upper chest and arms. The nerves in your thoracic spine go to your chest and abdomen. The nerves of the lumbar spine then reach to your legs, bowel, and bladder. These nerves coordinate and control all the body’s organs and parts, and let you control your muscles.

What is a Dermatome?

A dermatome is an area of skin in which sensory nerves derive from a single spinal nerve root (see the following image). Dermatomes of the head, face, and neck. Sensory information from a specific dermatome is transmitted by the sensory nerve fibers to the spinal nerve of a specific segment of the spinal cord.

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Is gray matter good or bad?

The gray matter changes occurred in the hippocampus, the part of the brain believed to be central to memory. It is “a structure important for healthy cognition across people’s lifespan,” the study says, and is “centrally involved in many functions including spatial navigation, episodic memory and stress regulation.”

What parts of the brain are grey matter?

Grey matter is distributed at the surface of the cerebral hemispheres (cerebral cortex) and of the cerebellum (cerebellar cortex), as well as in the depths of the cerebrum (thalamus; hypothalamus; subthalamus, basal ganglia – putamen, globus pallidus, nucleus accumbens; septal nuclei), cerebellar (deep cerebellar

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Is the richest in lipid content?

The structure richest in lipid content is b. white matter. White matter contains the highest amount of lipids because of its high myelin content.

What kind of nerve fibers innervate the eyes and ears?

SSA fibers carry special sensation from the eye and ear. SVA fibers carry taste and smell information, and finally, SVE fibers supply motor signals to muscles of branchial arch origin. Of the seven cranial nerve functional categories, the vagus nerve carries all fiber types except GSE and SSA fibers.

What does a mixed nerve contain?

mixed nerve: Nerves that contain both afferent and efferent axons, and thus conduct both incoming sensory information and outgoing muscle commands in the same bundle. Afferent nerve: Carries nerve impulses from sensory receptors or sense organs toward the central nervous system.