Cranial Nerves

Question 1

What is Cn. I also known as?

Answer 1

Olfactory nerve

Question 2

What is Cn. II also known as?

Answer 2

Optic nerve

Question 3

What is Cn. III also known as?

Answer 3

Oculomotor nerve

Question 4

What is Cn. IV also known as?

Answer 4

Trochlear nerve

Question 5

What is Cn. V also known as?

Answer 5

Trigeminal nerve

Question 6

What is Cn. VI also known as?

Answer 6

Abducens nerve

Question 7

What is Cn. VII also known as?

Answer 7

Facial nerve

Question 8

What is Cn. VIII also known as?

Answer 8

Vestibulocochlear nerve

Question 9

What is Cn. IX also known as?

Answer 9

Glossopharyngeal nerve

Question 10

What is Cn. X also known as?

Answer 10

Vagus Nerve

Question 11

What is Cn. XI also known as?

Answer 11

Accessory nerve

Question 12

What is Cn. XII also known as?

Answer 12

Hypoglossal nerve

Question 13

What is the Olfactory nerve also known as?

Answer 13

Cn. I

Question 14

What is the Optic nerve also known as?

Answer 14

Cn. II

Question 15

What is the Oculomotor nerve also known as?

Answer 15

Cn. III

Question 16

What is the Trochlear nerve also known as?

Answer 16

Cn. IV

Question 17

What is the Trigeminal nerve also known as?

Answer 17

Cn. V

Question 18

What is the Abducens nerve also known as?

Answer 18

Cn. VI

Question 19

What is the Facial nerve also known as?

Answer 19

Cn. VII

Question 20

What is the Vestibulocochlear nerve also known as?

Answer 20

Cn. VIII

Question 21

What is the Glossopharyngeal nerve also known as?

Answer 21

Cn. IX

Question 22

What is the Vagus nerve also known as?

Answer 22

Cn. X

Question 23

What is the Accessory nerve also known as?

Answer 23

Cn. XI

Question 24

What is the Hypoglossal nerve also known as?

Answer 24

Cn. XII

Question 25

Describe the functions of the olfactory nerve.

Answer 25

Smell basically

Question 26

Describe the functions of the optic nerve.

Answer 26

Vision basically

Question 27

Describe the functions of the oculomotor nerve.

Answer 27

Motor function of the eye

Question 28

Describe the function of the trochlear nerve.

Answer 28

A motor nerve that innervates only a single muscle: the superior oblique muscle of the eye.

Question 29

Describe the function of the trigeminal nerve.

Answer 29

The trigeminal nerve has 3 branches. 1. Opthalmic: sensation to the scalp, forehead and nose 2. Maxillary: sensation to the cheeks, lower eye lid, nasal mucosa, upper lip, upper teeth and palate 3. Mandibular: sensation to the anterior 2/3 tongue, skin over mandible and lower teeth and motor function of the muscles of mastication

Question 30

Describe the function of the abducens nerve.

Answer 30

It controls the movement of a single muscle, the lateral rectus muscle of the eye.

Question 31

Describe the function of the facial nerve.

Answer 31

- Sensation to part of ext. ear. - Taste from ant. 2/3 tongue, hard and soft palate - Innervation to the muscles of facial expression - Innervation to the lacrimal, submandibular, sublingual glands and mucous glands of mouth and nose

Question 32

Describe the function of the vestibulocochlear nerve.

Answer 32

Hearing and balance

Question 33

Describe the function of the glossopharyngeal nerve.

Answer 33

The glossopharyngeal nerve has many functions, including receiving various forms of sensory fibers from parts of the tongue, carotid body, the tonsils, the pharynx, and the middle ear. It also supplies parasympathetic fibers (those that aid the body with rest and digestion processes) to the parotid gland (a major salivary gland) and motor fibers to the stylopharyngeus muscle, which helps with swallowing. The glossopharyngeal nerve, along with the vagus nerve, forms part of the pharyngeal plexus, which supplies nerves to the palate and parts of the throat (larynx and pharynx).

Question 34

Describe the function of the vagus nerve.

Answer 34

Sensation: larynx, pharynx and, thoracic & abdominal viscera. Taste: taste from epiglottis region of tongue Motor: smooth muscles of pharynx, larynx and most of the GIT.

Question 35

Describe the function of the accessory nerve.

Answer 35

Innervates the trapezius and sternocleidomastoid.

Question 36

Describe the function of the hypoglossal nerve

Answer 36

Motor function to intrinsic and extrinsic tongue muscles (except the palatoglossus).

Question 37

Name the 12 cranial nerves.

Answer 37

NOTE: Ooh, ooh, ooh to touch and feel very good velvet. Ah heaven! 1. Olfactory 2. Optic 3. Oculomotor 4. Trochlear 5. Trigeminal 6. Abducens 7. Facial 8. Vestibulocochlear 9. Glossopharyngeal 10. Vagus 11. Accessory 12. Hypoglossal

Question 38

Describe whether the 12 cranial nerves are responsible for sensory function, motor function or both.

Answer 38

NOTE: Some say money matters but my brother says big brains matter more

Question 39

Where does the olfactory nerve (Cn. I) exit?

Answer 39

Cribriform plate

Question 40

Where does the optic nerve (Cn. II) exit?

Answer 40

Optic canal

Question 41

Where does the oculomotor nerve (Cn. III) exit?

Answer 41

Superior orbital fissure

Question 42

Where does the trochlear nerve (Cn. IV) exit?

Answer 42

Superior orbital fissure

Question 43

Where does the trigeminal nerve (Cn. V) exit?

Answer 43

Ophthalmic: Superior orbital fissure Maxillary: F. rotundum Mandibular: F. ovale

Question 44

Where does the abducens nerve (Cn. VI) exit?

Answer 44

Superior orbital fissure

Question 45

Where does the facial nerve (Cn. VII) exit?

Answer 45

Internal acoustic meatus

Question 46

Where does the vestibulocochlear nerve (Cn. VIII) exit?

Answer 46

Internal acoustic meatus

Question 47

Where does the glossopharyngeal nerve (Cn. IX) exit?

Answer 47

Jugular f.

Question 48

Where does the vagus nerve (Cn. X) exit?

Answer 48

Jugular f.

Question 49

Where does the accessory nerve (Cn. XI) exit?

Answer 49

Jugular f.

Question 50

Where does the hypoglossal nerve (Cn. XII) exit?

Answer 50

Hypoglossal canal