Most neurons of the ventral roots
A) are bipolar.
B) are unipolar.
C) have their cell bodies in white matter.
D) have their cell bodies in the ventral horns.
E) are interneurons.

Question

Quizplus · Accepted Answer

The ventral roots contain the axons of motor neurons, which have their cell bodies in the ventral horns of the spinal cord. Therefore, most neurons of the ventral roots have their cell bodies in the ventral horns. Choice A is incorrect because bipolar neurons have two processes, such as one dendrite and one axon, which is not characteristic of motor neurons. Choice B is incorrect because unipolar neurons have one process that divides into dendritic and axonal branches, and this structure is not typical of motor neurons. Choice C is incorrect because white matter contains myelinated axons, not cell bodies. Choice E is incorrect because interneurons are located within the spinal cord and are not part of the ventral roots.

Most Neurons of the Ventral Roots