TABLE 20.1 Cranial Nerves Cranial Nerve General Functions Name Senzory Somatic Motor Parasympathetic Olfactory Smell 11 Optu Vision Oculomotor Pupil constriction thickening of lens TV Trochlear Upper eyelid (blinking): four (of six) extrinsic eye muscles (eye movement) Extrinsic eye muscle, superior oblique (helps depress eye) Muscles of mastication (chewing) V Trigenul Sensation in face, teeth VI Abducens Extrinsic eye muscle, lateral rectus (abducts eye) Facial expression vn Taste Salivation: production of tears VIII Vestibutocochlear Hearing, equilibrium Glossopharyngeal Taste, touch Pharyngeal muscles (swallowing) Vagus Sensation in Muscles of palate, pharynx. larynx pharynx, larynx. (swallowing, voice production) viscera Accessory Two muscles of neck and upper back (helps in moving head, neck, shoulders) Hypoglossal Tongue muscles (swallowing, speaking, sticking your tongue out at your lab partner) Salivation Regulation of viscera of thorax and abdomen XI XII