Cranial Nerve Table

Question 1

CN I foramen?

Answer 1

Cribriform plate

Question 2

CN II foramen?

Answer 2

Optic canal (foramen)

Question 3

CN III foramen?

Answer 3

Superior orbital fissure

Question 4

CN IV foramen?

Answer 4

Superior orbital fissure

Question 5

CN V1 foramen?

Answer 5

Superior orbital fissure

Question 6

CN V2 foramen?

Answer 6

Foramen rotundum

Question 7

CN V3 foramen?

Answer 7

Foramen ovale

Question 8

CN VI foramen?

Answer 8

Superior orbital fissure

Question 9

CN VII foramen?

Answer 9

Internal auditory meatus

Question 10

CN VIII foramen?

Answer 10

Internal auditory meatus

Question 11

CN IX foramen?

Answer 11

Jugular foramen

Question 12

CN X foramen?

Answer 12

Jugular foramen

Question 13

CN XI foramen?

Answer 13

Foramen magnum and jugular foramen

Question 14

CN XII foramen?

Answer 14

Hypoglossal canal

Question 15

GSE

Answer 15

General somatic efferent

- Motor to voluntary mm.

Question 16

GSA

Answer 16

General somatic afferent

- Sensation from skin, muscle, joints

Question 17

GVE

Answer 17

General visceral efferent

• Motor to smooth muscle and glands
  
  • think parasymp

Question 18

GVA

Answer 18

General visceral afferent

- Sensation from internal organs

Question 19

SVE

Answer 19

Special visceral efferent

• Voluntary motor to pharyngeal arch (mm. of mastication, facial expression, pharynx, some small mm. attaching to hyoid bone)
  
  • Gill evolution (Law & Order SVE)

Question 20

SVA

Answer 20

Special visceral afferent

- Taste and smell

Question 21

SSA

Answer 21

Special somatic afferent

- Vision, hearing, balance (eyes and ears)

Question 22

SSE

Answer 22

Trick question, doesn’t exist

Question 23

CN I components and main structures innervated?

Answer 23

SVA: Olfactory nasal mucosa (smell)

Question 24

CN II components and main structures innervated?

Answer 24

SSA: Rods and cones of retina (vision)

Question 25

CN III components and main structures innervated?

Answer 25

GVE: (via ciliary ganglion) to sphincter pupillae and ciliary mm. (parasymp) GSE: sup, med, and inf recti and inf oblique mm. of eye and levator palpebrae superioris m.

Question 26

CN IV components and main structures innervated?

Answer 26

GSE: Superior oblique m.

Question 27

CN V components and main structures innervated?

Answer 27

GSA: V1- skin of upper part of face (upper orbit and above) V2- skin of mid-face, upper teeth, nasal and palatal mucosa V3- skin of lower face and jaw, floor of mouth, ant 2/3 tongue mucosa, lower teeth and gums, ear pinna and canal SVE: Mm. of mastication, ant belly of digastric m., tensor tympani, mylohyoid, tensor palatini (1st arch mm.)

Question 28

CN VI components and main structures innervated?

Answer 28

GSE: Lateral rectus m.

Question 29

CN VII components and main structures innervated?

Answer 29

GVA: deep sensation from soft palate SVA: taste buds of ant. 2/3 tongue GSA: sensation from small part ear pinna GVE: motor to submandibular, sublingual, lacrimal glands, glands of nasal mucosa SVE: motor to mm. of facial expression, post belly digastric, stylohyoid, stapedius mm.

Question 30

CN VIII components and main structures innervated?

Answer 30

SSA: organ of corti in cochlea duct. Semicircular canals, utricle and saccule

Question 31

CN IX components and main structures innervated?

Answer 31

GVA: deep sensory to post tongue, soft palate, pharynx, mucosa of tymp cavity, post auditory tube, carotid body and sinus SVA: Taste buds post 1/3 tongue and adajcent pharynx GSA: Gen sensory from small part of ear pinna and canal GVE: Parotid salivary gland (secretomotor) SVE: Stylopharyngeal m.

Question 32

CN X components and main structures innervated?

Answer 32

GVA: Visc sens from esophagus, trachea, pharynx, larynx, and abd viscera SVA: Taste buds in epiglottis and glottis GSA: Sens from small part of ear pinna, canal, and tymp membrane GVE: thoracic and abdominal viscera SVE: Mm. of the pharynx and larynx, levator palatini and cricothyroid

Question 33

CN XI components and main structures innervated?

Answer 33

SVE: motor to SCM and trapezius mm.

Question 34

CN XII components and main structures innervated?

Answer 34

GSE: Intrinsic and extrinsic mm. of the tongue (palatoglossus excepted)