Module 3 : Physiology

Lecture 14 : Nervous System (Part-II)

Table 14.2: List of human cranial nerves
Name	Origin	Distribution	Nature	Function
Olfactory	Olfactory epithelium	From olfactory lobe to temporal lobe	Sensory	Smell
Optic	Retina	Leads to occipital lobe	Sensory	Sight
Oculomotor	Midbrain	Four eye muscle	Motor	Movement of eyeball
Trochlear	Midbrain	Superior oblique eye muscle	Motor	Rotation of eyeball
Trigeminal Ophthalmic Maxillary Mandibular	Pons varolii - - -	Skin of nose, eyelid, forehead, scalpe, conjunctiva, lachrymal gland. Mucous membrane of cheeks and upper lip and lower eyelid Lower jaw, lower lip, pinna.	Mixed Sensory Sensory Mixed	Sensory supply to concerning part - Muscle of mastication
Abducens	Pons varolii	Lateral rectus eye muscle	Motor	Rotation of eyeball
Facial	Pons varolii	Face, neck, taste buds, salivary gland	Mixed	Taste (anterior 2/3 part of tonge), facial expression, saliva secretion
Auditory	Pons varolii	Internal ear	Sensory	Hearing and equilibrium
Glossopharyngeal	Medulla oblongata	Muscle and mucous membrane of pharynx and tongue.	Mixed	Taste (posterior 1/3 part of tounge), saliva secretion
Vagus	Medulla oblongata	Larynx, lungs. Heart, stomach, intestines	Mixed	Visceral sensations and movements
Accessory spinal	Medulla oblongata	Muscles of pharynx and larynx	Motor	Movement of pharynx and larynx
Hypoglossal	Medulla oblongata	Muscles of tongue	Motor	Movement of tounge.