Question

Differentiate between the following pairs on the basis of what is mentioned within brackets:

Spinal nerves and Cranial nerves (Number of nerves)

Answer 1

Spinal nerve:

1. The nerves that emerge from the spinal cord are known as spinal nerves.
2. There are 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal nerve.

Cranial nerve:

1. The nerves that originate directly from the brain are known as cranial nerves.
2. The cranial nerves include the olfactory nerve, optic nerve, oculomotor nerve, trochlear nerve, trigeminal nerve, abducens nerve, facial nerve, auditory/ vestibular nerve, glossopharyngeal nerve, vagus nerve, accessory nerve, and hypoglossal nerve.

Spinal nerve	Cranial nerve
Humans have 31 pairs of spinal nerves.	Humans have 12 pairs of cranial nerves.