BS - Cranial Nerves - Names and Function

Question 1

What is cranial nerve I?

Answer 1

Olfactory nerve

Question 2

What is cranial nerve II?

Answer 2

Optic nerve

Question 3

What is cranial nerve III?

Answer 3

Oculomotor nerve

Question 4

What is cranial nerve IV?

Answer 4

Trochlear nerve

Question 5

What is cranial nerve V?

Answer 5

Trigeminal nerve

Question 6

What is cranial nerve VI?

Answer 6

Abducens nerve

Question 7

What is cranial nerve VII?

Answer 7

Facial nerve

Question 8

What is cranial nerve VIII?

Answer 8

Vestibulocochlear nerve

Question 9

What is cranial nerve IX?

Answer 9

Glossopharyngeal nerve

Question 10

What is cranial nerve X?

Answer 10

Vagus nerve

Question 11

What is cranial nerve XI?

Answer 11

Accessory nerve

Question 12

What is cranial nerve XII?

Answer 12

Hypoglossal nerve

Question 13

What is the function of CNI?

Answer 13

Smell

Question 14

What is the function of CNII?

Answer 14

Vision

Question 15

What is the motor function of CNIII?

Answer 15

Extraocular muscles (except SO and LR)

Question 16

What is the motor function of CNIV?

Answer 16

Superior oblique muscle

Question 17

What is the sensory and motor function of CNV?

Answer 17

Sensory - sense of touch - face (eyelid)

Motor - mastication

Question 18

What is the motor function of CNVI?

Answer 18

Lateral rectus muscle

Question 19

What is the sensory and motor function of CNVII?

Answer 19

Sensory - taste

Motor - facial expression and lacrimal gland

Question 20

What is the function of CNVIII?

Answer 20

Hearing and sense of motion

Question 21

What is the sensory and motor function of CNIX?

Answer 21

Sensory - taste

Motor - swallowing and parotid gland

Question 22

What is the sensory and motor function of CNX?

Answer 22

Sensory - viceral sensory, sense of touch mouth/throat

Motor - swallowing, speech, visceromotor

Question 23

What is the motor function of CNXI?

Answer 23

Trapezius and sternocleidomastoid muscles

Question 24

What is the function of CNXII?

Answer 24

Intrinsic muscles of the tongue

Question 25

What 2 muscles does the superior division of CNIII innervate?

Answer 25

Superior rectus, levator palpebrae superioris

Question 26

What 3 muscles does the superior division of CNIII innervate?

Answer 26

Splits into three branches to innervate:
Medial rectus
Inferior rectus
Inferior oblique

Question 27

What is commentable about a specific branch of CNIII as it passes to innervate its muscle? What does this branch contain?

Answer 27

The nerve to the inferior oblique gives rise to a thick branch which passes the ciliary ganglion and contains parasympathetic fibres.

Question 28

What nerves arise from the ciliary ganglion, and what do they supply?

Answer 28

Short ciliary nerves, supplying the ciliary muscles and sphincter pupillae.

Question 29

Which is the most slender cranial nerve?

Answer 29

IV trochlear

Question 30

Name the three divisions of the trigeminal nerve.

Answer 30

Division I - ophthalmic
Division II - maxillary
Division III - mandibular

Question 31

What three nerves pass above the tendinous ring?

Answer 31

Frontal nerve, lacrimal nerve, and cranial nerve IV

Question 32

What four nerves pass through the tendinous ring?

Answer 32

cranial nerve III (superior/inferior division), cranial nerve VI, and nasociliary nerve.