Question

The Number of Spinal nerves in Human is:
A) 10 pairs
B) 12 pairs
C) 43 pairs
D) 31 Pairs

Answer 1

Hint: The nerves which are associated through the spinal cord and play a key role in multiple functions in the human body on a regular basis, it has identified these spinal nerves observed in pairs.

Complete Answer:
- In vertebrates any one of the paired peripheral nerves that arise from the spinal cord. The Central Nervous System (CNS) consists of the brain and the spinal cord.
- The spinal cord is the continuation of the brain which lies and is protected within the bones of the spine. You can think of the CNS as the control centre for the body.
- It allows us to think, create memories, speak, move, run, etc. The PNS (Peripheral nervous system) consists of two types of nerves such as 12 cranial nerves and 31 Pairs of spinal nerves.
- The spinal nerve pairs are associated through the spinal cord and perform multiple activities, and these are the 31 pairs that appear in the human body.
- The Composition of these nerves is much more routine than that of the cranial nerves. All the spinal nerves are merged sensory and motor axons that separate into two nerve roots. The sensory axons enter the spinal cord as the dorsal nerve root.
- The motor fibres, both somatic and autonomic, appear as the ventral nerve root. The dorsal root ganglion for each of the nerves is an enlargement of the spinal nerve.

Hence the correct answer is 31 pairs of Spinal nerves.

Note: The CNS consist of Brain and Spinal Cord, Spinal nerves associated with spinal cord and play a key role in daily activities of the human body. The peripheral nervous system has 12 Cranial nerves and 31 pairs of spinal nerves.