Cranial Nerve Labanswers

Anatomy & Physiology II Peripheral Nervous System

A. Cranial nerve numbers Give the Roman numeral for the 12 pairs of cranial nerves.

VI_ 1. Abducens I__ 7. Olfactory

XI__ 2. Accessory II_ 8. Optic

VII 3. Facial V__ 9. Trigeminal

IX_ 4. Glossophyaryngeal IV_ 10. Trochlear

XII 5. Hypoglossal X__ 11. Vagus

III 6. Oculomotor VIII 12. Vestibulocochlear

B. Cranial nerve function Identify if each cranial nerve is mainly sensory, motor, or both. S = sensory M = motor B = both sensory & motor

_S_ 1. Olfactory _B_ 7. Facial

_S_ 2. Optic _S_ 8. Vestibulocochlear

_M_ 3. Oculomotor _B_ 9. Glossophyaryngeal

_M_ 4. Trochlear _B_ 10. Vagus

_B_ 5. Trigeminal _M_ 11. Accessory

_M_ 6. Abducens _M_ 12. Hypoglossal

C. Function of the cranial nerves Write the name of the cranial nerve for the function described.

_hypoglossal____ 1. A motor nerve to the tongue for speech and swallowing

_abducens___________ 2. A motor nerve to move the lateral rectus eye muscle

_olfactory_______ 3. Receives sensory information from the nose

_trochlear________ 4. A motor nerve to move the superior oblique muscle

_optic_________ 5. Receives sensory information from the eye for vision

_oculomotor_____ 6. A motor nerve to the medial, superior, and inferior rectus muscles and inferior oblique muscle

_trigeminal______ 7. Transmits cutaneous sensory information from the face and motor information to muscles of mastication.

_accessory______ 8. A motor nerve to the muscles of the neck that move the head

_glossopharyngeal___ 9. A mixed nerve of the tongue and throat that receives 1/3 of taste information and acts in swallowing

_vagus______ 10. Receives sensory information from and transmits motor information to the visceral organs

_facial_________ 11. Receives sensory information from the anterior 2/3 of the tongue and sends motor information to the facial expression muscles

_vestibulocochlear_