Question

Which of the following statements regarding spinal nerves is true?

a. the dorsal ramus carries only sensory information while the ventral ramus carries only motor information
b. the dorsal root carries information only toward the spinal cord while the ventral root carries information away from the spinal cord
c. the dorsal ramus only carries information toward the posterior compartment of the body while the ventral ramus only carries information toward the anterior compartment of the body
d. the dorsal root is equivalent to the dorsal ramus
e. the dorsal ramus carries only motor information while the ventral ramus carries only sensory information

Answer 1

The true statement about spinal nerves is that the dorsal root carries sensory information toward the spinal cord and the ventral root carries motor information away from the spinal cord.

Step-by-step explanation:

Among the statements provided regarding spinal nerves, the one that is true is b. the dorsal root carries information only toward the spinal cord while the ventral root carries information away from the spinal cord. This is because in the structure of a spinal nerve, the dorsal root is composed of axons from sensory neurons which carry afferent signals to the spinal cord, and the ventral root contains axons from motor neurons which carry efferent signals away from the spinal cord to muscles and effector organs.