Question

Ventral horn: Lamina ___ contains terminations of many fibers of descending motor pathways

a) I
b) II
c) III
d) VIII

Answer 1

The ventral horn contains motor neurons in distinct layers called laminae, with lamina VIII housing the terminations of descending motor pathways.

Step-by-step explanation:

The ventral horn of the spinal cord is the area that contains motor neurons responsible for sending signals to skeletal muscles. Within the ventral horn, different laminae (or layers) have distinct functions. The terminations of many fibers of descending motor pathways are found in lamina VIII. These pathways include critical tracts like the corticospinal tract, which carries motor commands from the brain to the lower motor neurons in the spinal cord. These lower motor neurons then project out to the muscles, allowing voluntary movement.