Motor function, as opposed to the dorsal roots, which are primarily sensory.
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 consists of motor neuron axons. These axons carry signals from the central nervous system to muscles and glands, allowing for voluntary movement and autonomic functions.
axons of sensory neurons
The tips of the anterior horns are broader and less tapered than those of the posterior horns. Human Anatomy & Physiology Laboratory Manual Ninth Edition Elaine N. Marieb & Susan J. Mitchell
The tibial nerve arises from the L4 to S3 spinal nerve roots. It is a branch of the sciatic nerve and provides motor and sensory innervation to the posterior leg and sole of the foot.
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.
ventral root of a spinal nerve
Would lead to loss of both sensory & motor function. Ventral ramus is the anterior division of a spinal nerve.
the ventral root carries motor response
Loss of both motor and sensory function
ventral root
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.
The ventral root of the spinal nerve has the efferent fibers and the dorsal root has the afferent. Prior to joining each other in the spine they each consist of only those fibers.
Each spinal nerve attaches to spinal cord by a ventral (anterior) root and a dorsal (posterior) root.All spinal nerves are mixed nerves (both motor and sensory).
loss of both the motor and sensory functions
the what? root of a spinal nerve consists of motor neuron axons