Question

question 16
which of the following are included as ascending spinal nerve tracts?
a all of these
b reticulospinal tracts
c corticospinal tracts
d fasciculus gracilus and fasciculus cuneatus (dorsal columns)

Explanation:

• Reticulospinal tracts: These are descending tracts that are involved in regulating muscle tone and posture.
• Corticospinal tracts: These are also descending tracts. They are responsible for voluntary motor control.
• Fasciculus gracilus and fasciculus cuneatus (dorsal columns): These are ascending tracts. The fasciculus gracilis carries sensory information (such as fine touch, proprioception) from the lower half of the body, and the fasciculus cuneatus carries sensory information from the upper half of the body to the brain.

Answer:

D. fasciculus gracilus and fasciculus cuneatus (dorsal columns)