Multiple Choice
A neuron that transmits an impulse to the central nervous system after the neuron is stimulated by the environment is called a(n) __________.
45. Nervous System
Central and Peripheral Nervous System
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The glia cells present throughout the vertebrate central nervous system include __________.
A
Schwann cells
B
astrocytes
C
oligodendrocytes
D
microglia
E
All of the listed responses are correct.
Verified step by step guidance1
Begin by understanding the role of glial cells in the vertebrate central nervous system. Glial cells are non-neuronal cells that provide support and protection for neurons.
Identify the types of glial cells mentioned in the problem: Schwann cells, astrocytes, oligodendrocytes, and microglia.
Recognize that Schwann cells are actually part of the peripheral nervous system, not the central nervous system. They are responsible for myelinating peripheral nerves.
Focus on the remaining types: astrocytes, oligodendrocytes, and microglia. These are indeed present in the central nervous system. Astrocytes provide structural support and regulate the blood-brain barrier, oligodendrocytes myelinate central nervous system neurons, and microglia act as immune cells within the CNS.
Conclude that the statement 'All of the listed responses are correct' is inaccurate because Schwann cells are not present in the central nervous system. Therefore, the correct answer should exclude Schwann cells.
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