OOO-TTA-FAG-VAH
I. Olfactory: It arises from the olfactory lobe of the forebrain and enters the mucous membrane of the nose. It carries sensory nerves and olfactory impulses to the brain.
II. Optic: 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.
III. Oculomotor: 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.
IV. Trochlear: 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.
V. Trigeminal: arises from the medulla oblongata and divides into three branches.
(i) Opthalmic: 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) Ophthalmic: 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) Ophthalmic: 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.
VI. Abducens: 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.
VII. Facial: 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.
VIII. Auditory: arises from the medulla oblongata and enters the inner ear. It carries sensory nerves and sensations of hearing and balance to the brain.
IX. Glossopharyngeal: arises from the medulla oblongata and enters the tongue. It is mixed nerves. It helps in the circulation of taste, tongue and pharynx.
X. Glossopharyngeal: It arises from the medulla oblongata and divides into four branches. It is mixed nerves.
(i) Laryngeal: It enters the larynx.
(ii) Cardiac: It extends to the heart.
(iii) Gastric : Carries nerves in the stomach.
(iv) Pulmonary: Extends to the lungs.