It enters the roof of the mouth and receives taste. It is a sensory nerve.

It arises from the medulla oblongata and divides into two branches. It is mixed nerves.
(i) Palatine: It enters the roof of the mouth and receives taste. It is a sensory nerve.
(ii) Hyomandibular: It penetrates the eardrum, lower jaw and mucous membrane of the mouth. It controls the conduction of mixed nerves and muscles of taste and throat.

It arises from the medulla oblongata and innervates the rectus muscle of the eye. They control the circulation of the vagus nerve and the optic nerve.

It penetrates the skin of the lower jaw and lips. It is mixed nerves. It gives definition to the skin of the lower jaw and lips.

It penetrates the mucous membranes of the lower orbit, upper jaw and upper jaw. It carries sensory nerves and sensations from the affected parts to the brain.

It is the smallest branch. It penetrates the skin of the front of the head, the upper axilla and the mucous membrane of the nose. It carries sensory nerves and sensations from the affected parts to the brain.

Trigeminal nerve
It arises from the medulla oblongata and divides into three branches.
(i) Ophthalmic : It is the smallest branch. It penetrates the skin of the front of the head, the upper axilla and the mucous membrane of the nose. It carries sensory nerves and sensations from the affected parts to the brain.
(ii) Maxillary : It penetrates the mucous membranes of the lower orbit, upper jaw and upper jaw. It carries sensory nerves and sensations from the affected parts to the brain.
(iii) Mandibular : It penetrates the skin of the lower jaw and lips. It is mixed nerves. It gives definition to the skin of the lower jaw and lips.

It arises from the surface of the midbrain and inserts into the superior oblique muscle of the eye. It controls the circulation of the vagus nerve and the optic nerve.

It arises from the cingulate region of the midbrain and innervates the rectus muscle of the eye and the inferior oblique muscle. It is the optic nerve. It controls eye muscle function.

The right and left optic nerves arise from the optic lobes of the midbrain to form an X-shaped optic chiasma. It carries sensory nerves and vision to the brain.