Question

Which one is the spinal nerve?
A. Trigeminal
B. Hypoglossal
C. Olfactory
D. None of these

Answer 1

Hint:
Spinal nerves are bundles of nerve fibers that are connected to the spinal cord. It carries information to and away from the spinal cord.

Complete answer:
Spinal nerves are the nerves that emerge from the spinal cord. Spinal nerves are mixed nerves that send motor, sensory and autonomic signals between the CNS and the body. The peripheral nervous system constitutes of spinal nerves that are distributed throughout the body.
Each spinal nerve is constituted by a combination of nerve fibers from the dorsal and ventral roots of the spinal cord. Afferent sensory axons are carried by the dorsal roots. At the same time, efferent motor axons are carried by the ventral roots. The spinal nerves come out from the spinal column via the intervertebral foramen between adjacent vertebrae, which are surrounded by the dura mater.
Spinal nerves play a vital role in the control of body parts. Thirty-one pairs of spinal nerves are named and numbered based on the vertebrates with which they are associated. That includes 8 pairs of cervical, 12 pairs of thoracic, 5 pairs of lumbar, 5 pairs of sacral, and 1 pair of coccygeal nerve.
Hence the correct answer is None of these.

Option ‘D’ is correct

Note:
Spinal nerves can be affected by a number of conditions. As a result of this, the affected person may feel pain, sensory changes, weakness, etc. If the spinal nerve is injured it will lose its functional ability, loss of sensation, etc, or may lead to death.