Which of the following statements is INCORRECT regarding neuroglia.

Question

BlackTom AI · Accepted Answer

Examining the statements about neuroglia, each option makes a claim that you must evaluate for accuracy.
Option 1: 'Neuroglia are not electrically excitable.' This is correct. Unlike neurons, glial cells do not generate action potentials and do not participate in rapid electrical signaling, so they are not considered electrically excitable in the same way neurons are. Their functions are supportive, metabolic, and structural rather than electrical signaling.
Option 2: 'Astrocytes play a role in the blood brain barrier.' This statement is true. Astrocyte endfeet contribute to the integrity and function of the blood-brain barrier by regulating ion balance, nutrient transport, and interacting with endothelial cells.
Option 3: 'Ependymal cells assist in the production and circulation of cerebrospinal fluid.' This is also true. Ependymal cells line the ventricles and produce cerebrospinal fluid (in part) with cilia that help circulate it throughout the CNS.
Option 4: 'Neuroglia cannot divide and replicate.' This statement is incorrect. Neuroglia are mitotically active and can divide and proliferate, especially during development and in response to CNS injury. Types such as astrocytes, oligodendrocyte precursors, and microglia can divide under certain conditions, whereas neurons are largely post-mitotic. Therefore, this option makes a false claim about glial cell division.

Which of the following statements is INCORRECT regarding neuroglia.单项选择题

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