QUESTION 1 Which is false of CNS immunity? Microglia are the primary mediators o

Question

QUESTION 1 Which is false of CNS immunity? Microglia are the primary mediators of inflammation in multiple sclerosis Suppression of microglia results in increased production of trophic factors that support neuronal survival Suppressing CNS immunity is beneficial in MS and detrimental in cognitive processing Loss of only B cells is primarily responsible for deficits in learning and memory QUESTION 2 Which repair mechanism does not occur in mammals when nervous tissue is damaged? Long-range regrowth of damaged axons in the peripheral nervous system Restoration of damaged central neurons Neurogenesis Long-range regrowth of damaged axons in the central nervous system QUESTION 3 The ability of physical therapy to improve movement in once paralyzed limbs is most likely due to Reorganization of other cortical regions to support the functions of the damaged region Repair of the damaged neurons Neurogenesis in the damaged cortical region Migration of stem cells to the damaged cortical region

Explanation / Answer

Question 1:

Deficits in memory and learning are caused not only by loss of B cells, but also by loss of neurons.

Answer: Loss of only B cells is primarily responsible for deficits in learning and memory

Question 2:

Neurogenesis does not occur during the repair mechanism when nervous tissue is damaged. All the other mechanisms occur.

ANSWER: Neurogenesis

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