cranial nerves

Question 1

which nerves leave skull through superior orbital fissure?

Answer 1

• CNIII (oculomotor)
• CNIV (trochlear)
• CNV1 (opthalmic trigeminal)
• CNVI (abducens)

Question 2

which nerves leave skull through the foramen rotundum?

Answer 2

-CNV2 (maxillary trigeminal)

Question 3

which nerves leave skull through the foramen ovale

Answer 3

-CNV3 (mandibular trigeminal)

Question 4

which nerves leave skull through the internal acoustic meatus?

Answer 4

• CNVII (facial)

- CNVIII (vestibulocochlear)

Question 5

which nerves leave skull through jugular foramen?

Answer 5

• CNIX (glossopharyngeal)
• CNX (vagus)
• CNXI (accessory)

Question 6

which nerves leave through hypoglossal canal?

Answer 6

-CNXII (hypoglossal)

Question 7

which nerve leaves through cribriform plate of ethmoid?

Answer 7

-CNI (olfactory)

Question 8

which nerve leaves through optic canal?

Answer 8

-CNII (optic)

Question 9

what has parasympathetic innervation from CNIII?

Answer 9

• sphincter pupillae

- ciliary muscles (contraction -> lens thickening)

Question 10

what does CNIV supply?

Answer 10

-superior oblique

Question 11

which division of trigeminal gives motor supply?

Answer 11

-CNV3 (mandibular)

Question 12

what forms the afferent arm of the blink reflex?

Answer 12

-CNV1 (opthalmic)

Question 13

what does CNV3 supply?

Answer 13

• medial and lateral pterygoids
• masseter
• temporalis
• anterior belly of digastric
• mylohyoid
• tensor veli palatini
• tensor tympani

Question 14

what give sensory supply to teeth?

Answer 14

• CNV2

- CNV3

Question 15

what gives sensation to area in front of ear?

Answer 15

CNV

Question 16

what does CNVI supply?

Answer 16

lateral rectus

Question 17

what does CNVII give motor supply to?

Answer 17

• muscles of facial expression (incl. platysma)
• posterior bells of digastric
• stapedius
• stylohyoid

Question 18

which nerves gives parasympathetic supply to lacrimal, nasal and palatine glands?

-via which branch does it do this?

Answer 18

• CNVII (facial)

- greater petrosal

Question 19

which nerve gives parasympathetic innervation to submandibular and sublingual glands?

-via which branch does it do this?

Answer 19

• CNVII (facial)

- chorda tympanii

Question 20

what is special sensory supply of CNVII?

Answer 20

-taste to anterior 2/3rds of tongue

Question 21

what supplies stylopharyngess?

Answer 21

-CNIX (glossopharyngeal)

Question 22

what nerve passes through the parotid gland but does not supply it?

Answer 22

-CNVII (facial)

Question 23

what nerve supplies parotid?

Answer 23

-CNIX (glossopharyngeal)

Question 24

sepecial sensory supply of CNIX

Answer 24

-taste to posterior 1/3 of tongue

Question 25

which nerve provides sensory supply to middle ear and eustachian tube?

Answer 25

-CNIX (glossopharyngeal)

Question 26

which nerve forms the afferent arm of the gag reflex?

Answer 26

-CNIX (glossopharyngeal)

Question 27

which nerve provides sensory supply to palatine tonsils, carotid sinus and carotid body

Answer 27

-CNIX (glossopharyngeal)

Question 28

which muscles does recurrent laryngeal nerve supply?

Answer 28

- thyro-artenoid - posterior crico-arytenoid - lateral crico-arytenoid - transverse and oblique arytenoids - vacalis

Question 29

motor supply to superior, middle and inferior pharyngeal constrictors

Answer 29

-CNX (vagus)

Question 30

motor supply to palatapharyngeus, palatoglossus and salpingopharyngeus

Answer 30

-CNX (vagus)

Question 31

how much of GI tract does CNX supply?

Answer 31

- all up to splenic flexure of large colon | - the rest after this are supplied by pelvic splanchnic nerves?

Question 32

what gives sensory to supply to external acoustic meatus and concha?

Answer 32

CNX (vagus)

Question 33

what gives sensory supply to the laryngopharynx?

Answer 33

CNX (vagus)

Question 34

what does CNXI supply?

Answer 34

- sternocleidomastoid | - trapezius

Question 35

what are the extrinsic muscles of the tongue? what nerve supplies them?

Answer 35

- genioglossus - hyoglossus - syloglossus -CNXII (hypoglossal)

Question 36

what are the intrinsic muscles of the tongue? what n

Answer 36

- superior longitudinal - inferior longitudinal - transverse - vertical -CNIX (hypoglossal)