Category: Biology Second Paper

Arises from the medulla oblongata and enters the tongue. It is mixed nerves. It helps in the circulation of taste, tongue and pharynx.

It arises from the medulla oblongata and enters the inner ear. It carries sensory nerves and sensations of hearing and balance to the brain.

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 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.