Exam II Lecture VIII

Question 1

Sensory innervation to outer ear via

Answer 1

Great auricular nerve
Auriculotemporal nerve
Lesser occipital nerve

Question 2

Oval window is closed by

Answer 2

Footplate of stapes

Question 3

Auditory ossicles

Answer 3

Malleus-tympanic membrane
Incus
Stapes-oval window

Question 4

Stapedius muscle

Answer 4

Inserts onto neck of stapes
Contracts with loud sounds
Innervated by CN VII

Question 5

Tensor tympani muscle

Answer 5

Inserts onto malleus
Contracts with loud sounds
Innervated by CN V-3

Question 6

CN IX includes

Answer 6

Tympanic nerve

Lateral petrosal nerve

Question 7

Tympanic nerve

Answer 7

GSA to mucosa of tympanic cavity, mastoid air cells, and auditory tube

Question 8

Lateral petrosal nerve route

Answer 8

Leaves tympanic cavity to floor of middle cranial fossa
Descends through foramen ovale to infratemporal fossa
Ends in otic ganglion

Question 9

Inner ear is supplied by ____ artery which is a branch of

Answer 9

Labyrinthine artery from the basilar artery

Question 10

Cochlea

Answer 10

Resembles snail shell
Three turns
Round window

Question 11

Inner ear contains

Answer 11

Bony/membranous labyrinth
Cochlea
Vestibule

Question 12

Vestibule contains

Answer 12

Utricle

Saccule

Question 13

Inner ear is supplied by what nerve

Answer 13

Vestibulocochlear nerve CN VIII

Question 14

Semicircular canals open into

Answer 14

Utricle

Question 15

Semicircular canals are dilated at one end to form ___ which has what function

Answer 15

Ampulla with crista ampullaris

Senses rotational acceleration

Question 16

Utricle and saccule contain ____ and their function is

Answer 16

Macula

Senses linear acceleration and pull of gravity

Question 17

Roof bones of orbit

Answer 17

Orbital plate of frontal bone

Lesser wings of sphenoid

Question 18

Roof bones of orbit related to, special features

Answer 18

Related to cerebral lobes

Special feature- fossa for lacrimal gland

Question 19

Floor bones of orbit

Answer 19

Orbital plate of maxilla
Zygomatic
Orbital process of palatine

Question 20

Floor bones of orbit related to, special features

Answer 20

Related to maxillary sinus
Special features- Infraorbital groove/canal containing
-Infraorbital nerve and artery

Question 21

Infraorbital nerve/artery are continuations of

Answer 21

Cranial nerve V2

Branch of external carotid artery

Question 22

Medial wall of bones of orbit

Answer 22

Lacrimal
Frontal
Ethmoid

Question 23

Medial wall related to

Answer 23

Ethmoid air cells
Sphenoid sinus
Nasal cavity

Question 24

Special features medial wall

Answer 24

Fossa for lacrimal sac

Opening for nasolacrimal canal

Question 25

Lateral wall bones of orbit

Answer 25

Zygomatic Greater wing of sphenoid Frontal

Question 26

Lateral wall related to

Answer 26

Temporal fossa containing temporalis muscle | Middle cranial fossa

Question 27

Tarsal plates and tarsal glands are part of

Answer 27

Eyelids

Question 28

Lacrimal apparatus sympathetic supply

Answer 28

From T1 To superior cervical ganglion To lacrimal gland

Question 29

Lacrimal apparatus parasympathetic supply

Answer 29

From lacrimal nucleus via CN VII To sphenoplatine ganglion To lacrimal gland curtesy of CN V

Question 30

Superior orbital fissure contains

Answer 30

``` CN III CN IV CN V-1 ophthalmic branch CN VI Superior ophthalmic vein ```

Question 31

Optic canal contains

Answer 31

CN II | Ophthalmic artery

Question 32

Anterior/posterior ethmoidal foramina exit for

Answer 32

Exit for anterior/posterior ethmoidal nerves

Question 33

Inferior orbital fissure contains

Answer 33

CN V-2 - infraorbital nerve - zygomatic branch - orbital branches

Question 34

Inferior oblique function

Answer 34

Abducts, elevates, laterally rotates

Question 35

Superior rectus function

Answer 35

Elevates, adducts, medially rotates

Question 36

Medial rectus function

Answer 36

Adducts

Question 37

Inferior rectus function

Answer 37

Depresses, adducts, rotates laterally

Question 38

Superior oblique function/innervation

Answer 38

Abducts, depresses, medially rotates | CN IV

Question 39

Lateral rectus function/innervation

Answer 39

Abducts | CN VI

Question 40

Levator palpebrae superioris function

Answer 40

Raises upper eyelid

Question 41

Which eye muscles are innervated by CN III

Answer 41

Inferior oblique Superior/medial/inferior rectus Levator palpebrae superioris

Question 42

Parasympathetic innervation to extrinsic eye muscles route

Answer 42

From Edinger-westphal nucleus To ciliary ganglion To sphincter pupillae muscle

Question 43

Sympathetic innervation to extrinsic eye muscles route

Answer 43

From T1 To superior cervical ganglion To dilator pupillae muscle

Question 44

Sensory innervation of orbit via

Answer 44

Optic nerve | Ophthalmic nerve V(1)

Question 45

Ophthalmic nerve branches

Answer 45

Lacrimal nerve Nasociliary nerve Frontal nerve

Question 46

Nasociliary nerve branches

Answer 46

Infratrochlear | Anterior/posterior ethmoidal

Question 47

Frontal nerve branches

Answer 47

Supratrochlear | Supraorbital

Question 48

Hard palate

Answer 48

Anterior two thirds | Palatine folds of maxillae

Question 49

Soft palate

Answer 49

Posterior third | Fibromuscular fold

Question 50

Teeth formed by

Answer 50

Maxillary | Mandibular

Question 51

CN V2 includes

Answer 51

Greater and lesser palatine nerves Nasopalatine nerves Sensory to mucous membrane

Question 52

CN V3 includes

Answer 52

Lingual nerve-floor of mouth Buccal nerve- vestibule/cheek Sensory to mucous membrane

Question 53

Sympathetics to mucous membrane are same as

Answer 53

Those to the nose

Question 54

Parasympathetic route to sublingual/submandibular glands

Answer 54

From superior salivatory nucleus via CN VIII To submandibular/sublingual ganglia To glands

Question 55

Parasympathetic route to parotid

Answer 55

From inferior salivatory nucleus via CN IX To otic ganglion To gland

Question 56

Maxillary teeth innervated by

Answer 56

Superior alveolar branch CN V

Question 57

Mandibular teeth innervated by

Answer 57

Inferior alveolar branch CN V

Question 58

Anterior two thirds tongue sensory innervation

Answer 58

CN V via lingual nerve

Question 59

Posterior one third tongue sensory innervation

Answer 59

CN IX

Question 60

Anterior two thirds tongue taste innervation

Answer 60

CN VII

Question 61

Posterior one third tongue taste innervation

Answer 61

CN IX

Question 62

All intrinsic and extrinsic muscles of tongue are innervated by

Answer 62

CN XII

Question 63

Oropharynx extends from what to what, lies at what level

Answer 63

From soft palate to upper epiglottis | Lies at level of second/third cervical vertebrae

Question 64

Palatopharyngeus muscle function/innervation

Answer 64

Elevates pharynx during swallow | Vagus nerve

Question 65

Palatoglossus muscle function/innervation

Answer 65

Depresses palate | Vagus nerve

Question 66

Tensor veli palatine origin function

Answer 66

Sphenoid bone | Tenses soft palate

Question 67

Levator veli palatine origin function

Answer 67

Petrous temporal bone | Elevates soft palate