Microglia:
Correct answer: C. Are phagocytic
- A. From cerebrospinal fluid
- B. Only attach to capillaries to support neurons
- C. Are phagocytic
- D. Form the myelin of Central Nervous System neurons
Explanation
Microglia are the resident immune cells of the central nervous system (CNS). They play a crucial role in the immune defense of the CNS by acting as phagocytes, which means they engulf and digest pathogens, cellular debris, and dead or dying cells.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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