Which glial cells in the following image help in immune surveillance and phagocytosis?

Rationale

Microglial cells help in immune surveillance and phagocytosis.

Microglial cells are the primary immune cells of the central nervous system, responsible for monitoring the environment and removing debris through phagocytosis. They play a crucial role in neuroprotection and maintaining homeostasis in the brain.

A (Microglial cell) CORRECT

Microglial cells are specialized immune cells located in the brain and spinal cord. They constantly survey the CNS environment for pathogens and damaged cells, responding rapidly to injury or disease. Their ability to perform phagocytosis makes them essential for immune defense and maintaining neural health.

B (Astrocyte) YOUR ANSWER

Astrocytes primarily support neuronal function by providing metabolic support, regulating blood flow, and maintaining the blood-brain barrier. While they contribute to the immune environment by releasing signaling molecules, they do not perform phagocytosis or serve as the primary immune surveillance cells.

C (Oligodendrocytes) YOUR ANSWER

Oligodendrocytes are responsible for the formation of myelin sheaths around axons in the central nervous system, which enhances the speed of electrical impulses. They do not have an immune function and do not engage in phagocytosis, making them distinctly different from microglial cells.

D (Ependymal cells) YOUR ANSWER

Ependymal cells line the ventricles of the brain and the central canal of the spinal cord, playing a role in the production and circulation of cerebrospinal fluid. They do not participate in immune surveillance or phagocytosis, focusing instead on fluid dynamics and maintaining the CNS environment.

Conclusion

Microglial cells are integral to the immune response in the central nervous system, distinguished by their unique ability to perform immune surveillance and phagocytosis. In contrast, astrocytes, oligodendrocytes, and ependymal cells serve other functions that do not involve direct immune activity. Understanding the roles of these glial cells is essential for comprehending their contributions to brain health and disease.

Which glial cells in the following image help in immune surveillance and phagocytosis?

Microglial cells help in immune surveillance and phagocytosis.

Related Questions

Related Quizzes

How familiar were you with this question?

Report an Issue

Rate this Practice Test