4. Where would you find the cell bodies of the cells responsible for motor funct

Question

4. Where would you find the cell bodies of the cells responsible for motor function in the brain (aka. the upper motor neurons)?

5. In all the afferent sensory pathways below the neck, where is the cell body of the first order neuron found?

6. The regions of skin that are monitored for sensation by a pair of spinal nerves at a specific level in the spinal cord (e.g. T7) are called what?

7. Why don’t you feel the shirt you are wearing unless you focus your attention on it? There are two possible reasons.

Explanation / Answer

4.The cell bodies of upper motor neurons responsible for motor function are located either in the cortex or in the parts of brainstem i.e the vestibular nucleus,the reticular formation and the superior colliculus.The cell bodies of the lower motor neurons are located in the ventral horn of the gray matter in spinal cord and in the cranial nerves' motor nuclei found in the brain stem.

5.In afferent sensory pathways below the neck,the cell body of the first order neuron is found in the peripheral i.e cranial or spinal ganglion.

6.The regions of skin that are monitored for sensation by a pair of spinal nerves at a specific level in the spinal cord (e.g. T7) are called dermatomes.

7.This could be related as to how the process of focussing works in our brain.There could be 2 reasons:

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