Cranial Nerves Flashcards Preview

Sem 3: Head and Neck > Cranial Nerves > Flashcards

Flashcards in Cranial Nerves Deck (50):
1

What is Cn. I also known as?

Olfactory nerve

2

What is Cn. II also known as?

Optic nerve

3

What is Cn. III also known as?

Oculomotor nerve

4

What is Cn. IV also known as?

Trochlear nerve

5

What is Cn. V also known as?

Trigeminal nerve

6

What is Cn. VI also known as?

Abducens nerve

7

What is Cn. VII also known as?

Facial nerve

8

What is Cn. VIII also known as?

Vestibulocochlear nerve

9

What is Cn. IX also known as?

Glossopharyngeal nerve

10

What is Cn. X also known as?

Vagus Nerve

11

What is Cn. XI also known as?

Accessory nerve

12

What is Cn. XII also known as?

Hypoglossal nerve

13

What is the Olfactory nerve also known as?

Cn. I

14

What is the Optic nerve also known as?

Cn. II

15

What is the Oculomotor nerve also known as?

Cn. III

16

What is the Trochlear nerve also known as?

Cn. IV

17

What is the Trigeminal nerve also known as?

Cn. V

18

What is the Abducens nerve also known as?

Cn. VI

19

What is the Facial nerve also known as?

Cn. VII

20

What is the Vestibulocochlear nerve also known as?

Cn. VIII

21

What is the Glossopharyngeal nerve also known as?

Cn. IX

22

What is the Vagus nerve also known as?

Cn. X

23

What is the Accessory nerve also known as?

Cn. XI

24

What is the Hypoglossal nerve also known as?

Cn. XII

25

Describe the functions of the olfactory nerve.

Smell basically

26

Describe the functions of the optic nerve.

Vision basically

27

Describe the functions of the oculomotor nerve.

Motor function of the eye

28

Describe the function of the trochlear nerve.

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

29

Describe the function of the trigeminal nerve.

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

30

Describe the function of the abducens nerve.

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

31

Describe the function of the facial nerve.

- 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

32

Describe the function of the vestibulocochlear nerve.

Hearing and balance

33

Describe the function of the glossopharyngeal nerve.

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).

34

Describe the function of the vagus nerve.

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.

35

Describe the function of the accessory nerve.

Innervates the trapezius and sternocleidomastoid.

36

Describe the function of the hypoglossal nerve

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

37

Name the 12 cranial nerves.

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

38

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

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

39

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

Cribriform plate

40

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

Optic canal

41

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

Superior orbital fissure

42

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

Superior orbital fissure

43

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

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

44

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

Superior orbital fissure

45

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

Internal acoustic meatus

46

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

Internal acoustic meatus

47

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

Jugular f.

48

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

Jugular f.

49

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

Jugular f.

50

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

Hypoglossal canal