Yes, the ventral root of a spinal nerve is the efferent motor root, consists of axons of motor neurons. It joins the dorsal root to form a mixed spinal nerve, which consists of afferent sensory neurons (from the dorsal root) and efferent motor neurons (from the ventral root).
Therefore severing the ventral root will result in a loss of motor function for the myotome supplied by that spinal nerve.
Loss of both motor and sensory function
Would lead to loss of both sensory & motor function. Ventral ramus is the anterior division of a spinal nerve.
There are a number of things that would happen if the ventral root of a spinal nerve were damage or transected, This would mainly cause the loss of the sensory function and there would be neuropathic pain among other effects.
the ventral root carries motor response
ventral root of a spinal nerve
The motor function supplied by those nerve would be impared.
The anterior or ventral roots carry motor or efferent information from motoneurons in the anterior horn to muscles. This is as opposed to the dorsal roots that convey sensory or afferent informaiton from the periphery to the dorsal horns of the spinal cord. This is not to be confused with ventral rami that subserve intrinsic muscles of the back and neck. Therefore if a ventral root is severed or cut there would be a loss on motor function to muscles in the distribution of that root (called a myotome).
The ventral root of a spinal nerve contains efferent motor neurons that carry signals away from the spinal cord to muscles and glands in the body. These motor neurons control voluntary movements and autonomic functions.
motor
ventral root from the ventral horn of the spinal cord is motor. If ventral root is cut it will lead to to a kind of paralysis called flaccid paralysis. This is because ventral horn contains lower motor neurons. As such the skeletal muscle innervated by the root is paralysed
ventral root
loss of both the motor and sensory functions