Question

question 25 1 p in the nervous system, glial cells handle majority of the information processing in the brain. provide support and nutritional benefits to neurons. produce new neurons and replace old neurons. serve as a substitute for afferent neurons.

Explanation:

1. Analyze the first option: Neurons are responsible for most information processing in the brain, not glial cells. So this option is incorrect.
2. Analyze the second option: Glial cells (like astrocytes, oligodendrocytes, etc.) have roles in supporting neurons, providing nutrients (e.g., astrocytes supply glucose), and maintaining the extracellular environment. This matches the function of glial cells.
3. Analyze the third option: In most parts of the adult brain, new neurons are not produced in large numbers by glial cells (neurogenesis in adults is limited and mainly in specific regions, and glial cells don't typically replace old neurons in the way described). So this option is incorrect.
4. Analyze the fourth option: Afferent neurons are sensory neurons, and glial cells do not substitute for them. Their functions are distinct. So this option is incorrect.

Answer:

B. provide support and nutritional benefits to neurons.