Bio107-lab17

Question 1

12 Cranial nerves: name & function

1. Olfactory

Answer 1

sense of smell

location: longest white part, top (28)

Question 2

2. Optic

Answer 2

vision

loc: 2 white dots below olfactory (30)

Question 3

3. Oculomotor

Answer 3

muscles of the eye

loc: comes off the top of the cerebellum, small white dots

Question 4

4. Trochlear

Answer 4

muscles of the eye

loc: thin white line next to cerebellum and temporal lobe (near 33)

Question 5

5. Trigeminal

Answer 5

sensory nerve of face

loc: white dot on the top of the raised/smooth part of cerebellum (34)

Question 6

6. Abducens

Answer 6

muscles of the eye

loc: most medial white line coming off briainstem (35)

Question 7

7. Facial

Answer 7

facial expression, lacrimal & salivary glands, taste

loc: middle white line also coming off brainstem (36)

Question 8

8. Vestibulocochlear

Answer 8

equilibrium and hearing

loc: most lateral white line also coming off brainstem (37)

Question 9

9. Glossopharyngeal

Answer 9

senses in the back of the mouth (throat and tongue)

loc: first/top side bump on brain stem (38)

Question 10

10. Vagus

Answer 10

breathing heart rate

loc: second side bump on brain stem (39)

IMPORTANT

Question 11

11. Accessory

Answer 11

nerves to the shoulder and neck

loc: third bump on brain stem (42)

Question 12

12. Hypoglossal

Answer 12

tongue muscles

loc: biggest medial side bump off brain stem (41)