chapter 13 13.4

Olfactory nerve

(CN I) Sense of smell

optic nerve

CN II visual informetion

oculomotor nerve

CN III: (motor) controls eye movement; raises eye lids

trochlear nerve

CN IV eyes movement

abducens nerve

Cranial nerve VI. abduction of eyeball lateral rotation

Glossopharyngeal

IX, tongue and pharynx motor, swallowing, saliva, taste

Name the cranial nerve(s) most involved in each of the following: moving your eyeball; sticking out your tongue; controlling your heart rate and digestive activity; shrugging your shoulders.

The oculomotor (III), trochlear (IV), and abducens (VI) nerves control eye movements. Sticking out your tongue involves the hypoglossal nerve (XII). The vagus nerve (X) influences heart rate and digestive activity. The accessory nerve (XI) innervates the trapezius muscle, which is involved in shoulder shrugging.

Name the 12 pairs of cranial nerves; indicate the body region and structures innervated by each.

Twelve pairs of cranial nerves are associated with the brain The first two pairs attach to the forebrain, and the rest are associated with the brain stem. 1. Olfactory 2. Optic 3. Oculomotor 4. Trochlear 5. Trigeminal 6. Abducens 7. Facial 8. Acoustics 9. Glossopharyngeal 10. Vagus 11. Hypoglossal 12. Accessory Nerves.

trigeminal nerve

V sensory sensation of touch, pain and temperature(face)

facial nerve

VII facial expression

Vestibulocochlear

VIII hearing and balance

vagus nerve

X the only cranial nerve to extend beyond the head and neck to the thorax and abdomen

Accessory nerve

XI coordinates head movements

hypoglossal nerve

XII, motor For speech and swallowing.