MICROANATOMY

MUSCLE NERVE CARTILAGE BONE

PERIPHERAL NERVE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A patient has an injury to the ventral root of his spinal nerve at the lumbar level of his spinal cord. He will experience problems of
A
sensory at the bowel and bladder
B
motor at the legs and feet
C
sensory at the legs and feet
D
motor at the arms and diaphragm
Explanation: 

Detailed explanation-1: -Answer and Explanation: If the ventral root of a spinal nerve was severely damaged or cut, it would cut off the pathway of motor information from the spinal cord to the spinal nerve. Therefore, whatever effectors that spinal nerve controlled would no longer work; it would be paralyzed.

Detailed explanation-2: -Spinal root avulsion injuries typically affect ventral and well as dorsal roots, causing paralysis of denervated muscles, loss of sensory and autonomic function, and, most often, neuropathic pain.

Detailed explanation-3: -Injuries below this level (at the L3, L4, and L5 vertebrae) affect the hips and legs and may cause numbness extending to the feet (sciatica). It may also harm the tip of the spinal cord known as the cauda equina, which is a bundle of spinal nerves and nerve roots that innervate the lower lumbar spine to the sacrum.

There is 1 question to complete.