Which characteristics describe Microglial cells?

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Multiple Choice

Which characteristics describe Microglial cells?

Explanation:
Microglial cells act as the brain’s resident immune cells. They are the smallest glial cells in the CNS and are the least numerous among glia. Their key role is phagocytic: they constantly survey the tissue and engulf debris, pathogens, and damaged neurons to help keep the CNS clean and respond to injury. They don’t form the blood–brain barrier—that job belongs to endothelial cells with tight junctions (and astrocyte endfeet contribute), and they don’t line the ventricles—that role is played by ependymal cells. So the description that fits best is small size, being the least numerous, and phagocytic.

Microglial cells act as the brain’s resident immune cells. They are the smallest glial cells in the CNS and are the least numerous among glia. Their key role is phagocytic: they constantly survey the tissue and engulf debris, pathogens, and damaged neurons to help keep the CNS clean and respond to injury. They don’t form the blood–brain barrier—that job belongs to endothelial cells with tight junctions (and astrocyte endfeet contribute), and they don’t line the ventricles—that role is played by ependymal cells. So the description that fits best is small size, being the least numerous, and phagocytic.

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