Which of the following cell types does not play a supporting role in nervous tissue within the CNS?Question 4Answera.Neuronb.Ependymal cellc.Oligodendrocyted.Microgliae.Astrocyte
Question
Which of the following cell types does not play a supporting role in nervous tissue within the CNS?Question 4Answera.Neuronb.Ependymal cellc.Oligodendrocyted.Microgliae.Astrocyte
Solution
The cell type that does not play a supporting role in the nervous tissue within the Central Nervous System (CNS) is the Neuron.
Here's why:
a. Neuron: Neurons are the primary cells of the nervous system involved in transmitting information. They are not considered supporting cells, but rather the main functional units of the nervous system.
b. Ependymal cells: These are a type of glial cell and they line the ventricles of the brain and the central canal of the spinal cord. They are involved in the production and movement of cerebrospinal fluid, thus playing a supporting role.
c. Oligodendrocytes: These are another type of glial cell. They produce the myelin sheath, a fatty layer that insulates nerve fibers in the CNS, allowing for efficient transmission of electrical signals. This is a crucial supporting role.
d. Microglia: These cells are the immune cells of the CNS. They protect against pathogens and clear away dead neurons, again playing a supporting role.
e. Astrocytes: These are star-shaped glial cells that have many functions, including maintaining the blood-brain barrier, providing nutrients to neurons, and repairing the brain and spinal cord following traumatic injuries. They are perhaps the most versatile of all glial cells in their supporting roles.
So, the answer is a. Neuron.
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