Cranial Nerve #: Name | Modality Major functions Organ/s it innervate/s Sensory

Question

Cranial Nerve #: Name | Modality Major functions Organ/s it innervate/s Sensory sense of smell I. Olfactory 1. Optic ll. Oculomotor W. Trochlear V. Trigeminal V A. Opthalmic branch Retina of the eye eyeball and eyelid movement; lens shape eyeball movement, proprioception sensation of touch and pain facial skin, nose, mouth, teeth and tongue V B. Maxillary branch V C. Mandibular branch lateral rectus muscle V1. Abducens eyeball movement, proprioception MOTOR: movement of facial muscles; tear and saliva secretion; VIl. Facial SENSORY: sense of taste VIll. Vestibulocochlear Vill A. Cochlear branch VII B. Vestibular branch sense of hearing sense of equilibrium SENSORY: sense of taste, touch, pain MOTOR: baroreceptor; movement of tongue and swallowingi salivation X. Glossopharyngeal X. Vagus Xi. Accessory head movement; swallowing XlI. Hypoglossal ACTIVITY: Sheep brain dissection

Explanation / Answer

I. Nerve cavity

II. Sensory; sense of vision

III. Motor; eye muscles( ciliary, spincter, most of the external eye muscles)

IV. Motor; superior oblique eye muscle

V.A sensory

V.B sensory; sensation of touch and pain ; maxilary teeth, skin between palpabral teeth and mouth, nasal cavity and sinuses.

V.C. mixed; chewing and lingual split; muscles of masticating, lingual split chin and lower lip

VI. Motor

VII. Mixed; facial skin, supmandibular salivary gland, lacrimal gland

VIII. A. Sensory;cochlea

VIII. B. Sensory; vestibular hair cells in otolith organs

IX. Mixed, parotid salivary glands and pharyngeal muscles

X. Mixed; speaking, swallowing; tongue, heart, viceral organs.

XI. Motor; movement of head, vicera, shoulder and voice production; skeletal muscles of palate, larynx , pharynx

XII. Motor; tongue movement; tongue muscles

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