Lecture 11

Question 1

A tendon in the lacrimal gland separates it into what two parts?

Answer 1

orbital and palpebral

Question 2

part of lacrimal gland located in lacrimal fossa in frontal bone

Answer 2

orbital

Question 3

part of lacrimal gland inferior to levator palpebrae superioris

Answer 3

palpebral

Question 4

(T/F) Tears drain from lateral to medial.

Answer 4

true

Question 5

What are the 7 bones of the orbit?

Answer 5

• frontal
• zygomatic
• maxilla
• lacrimal
• sphenoid
• ethmoid
• palatine

Question 6

What are the 3 passageways in the orbit?

Answer 6

• optic canal
• superior orbital fissure
• inferior orbital fissure

Question 7

Axes of the eyeball?

Answer 7

• AP axis

- vertical axis

Question 8

What are the 6 extraocular muscles?

Answer 8

• medial rectus
• lateral rectus
• superior rectus
• inferior rectus
• superior oblique
• inferior oblique

Question 9

The superior oblique muscle is innervated by which cranial nerve?

Answer 9

-trochlear nerve

Question 10

The lateral rectus muscle is innervated by which cranial nerve?

Answer 10

-abducens nerve

Question 11

The oculomotor nerve innervates which 4 muscles?

Answer 11

• superior rectus
• medial rectus
• inferior rectus
• inferior oblique muscle

Question 12

The optic canal is innervated by which cranial nerve?

Answer 12

CN2

Question 13

The superior orbital fissure is innervated by which cranial nerves?

Answer 13

CN 3, 4, 5, 6

Question 14

The inferior orbital fissure is innervated by which cranial nerve?

Answer 14

CN5

Question 15

The orbital ring is innervated by which cranial nerves?

Answer 15

CN 2, 3, 5, 6

Question 16

The superior ophthalmic vein passes through which 2 structures?

Answer 16

-superior orbital fissure and within the ring

Question 17

The ophthalmic artery passes through which two structures?

Answer 17

optic canal and within the ring

Question 18

What is the movement for inferior oblique muscles and for superior oblique muscles?

Answer 18

• IO: medial and upward

- SO: medial and downward

Question 19

What is the major blood supply of the eye?

Answer 19

• ophthalmic artery (major)

- central retinal artery (minor)

Question 20

What region does the central retinal artery supply?

Answer 20

-nerve and retina tissue

Question 21

What are the 3 intrinsic eye muscles?

Answer 21

• ciliary muscle
• sphincter pupillae
• dilator pupillae

Question 22

Which intrinsic muscles have parasympathetic innervation and which is sympathetic?

Answer 22

• parasympathetic: ciliary muscle and sphincter pupillae

- sympathetic-dilator pupillae

Question 23

• (X) causes lens to become round
• (Y) constricts the pupil.
• (Z) dilates pupil

Answer 23

X-ciliary muscle
Y-sphincter pupillae
Z-dilator pupillae

Question 24

Where is the oral cavity?

Answer 24

• inferior to nasal cavities

- continue to oropharynx and pharynx

Question 25

Between teeth and lining of lips and cheeks

Answer 25

oral vestibule

Question 26

Where is oral cavity proper?

Answer 26

- lateral-teeth and gums - superior-palates - posterior-to oropharynx - floor-tongue

Question 27

What are the 4 main parts of the lip?

Answer 27

- philtrum - skin - fat - oral commissure

Question 28

What 2 things does the oral vestibule consist of?

Answer 28

-lips and cheeks

Question 29

From the oral cavity proper, what is the difference between hard and soft palate?

Answer 29

- hard-help chew food | - soft- close nasopharynx

Question 30

What 2 bones form hard palate?

Answer 30

-maxilla and palatine bone

Question 31

What are the 3 sets of foramina in the hard palate?

Answer 31

- incisive fossa - greater palatine foramen - lesser palatine foramen

Question 32

Where is the nasopalatine nerve found?

Answer 32

-incisive fossa

Question 33

What are the 5 sets of muscles in the soft palate?

Answer 33

- tensor veli palatini - levator veli palatini - palatopharyngeus - palatoglossus - musculus uvalae

Question 34

What is the function and innervation of tensor veli palatini?

Answer 34

- tense soft palate and open pharyngotympanic tube when swallowing - innervate by CNV3

Question 35

What is the function and innervation of levator veli palatini?

Answer 35

- elevates soft palate when swallowing | - innervate by CNX

Question 36

What is the function and innervation of palatopharyngeus?

Answer 36

- elevate larynx and pharynx | - CNX

Question 37

What is the function and innervation of palatoglossus?

Answer 37

- elevates 1/3 posterior tongue | - CNX

Question 38

What is the function and innervation of the musculus uvulae?

Answer 38

- elevates uvula | - CNX

Question 39

What are the 3 major salivary glands?

Answer 39

- parotid gland - submandibular gland - sublingual gland

Question 40

Which duct pierces the buccinator muscle to enter oral cavity?

Answer 40

- facial nerve - external carotid artery - retromandibular vein

Question 41

What are the 4 main functions of the tongue?

Answer 41

- swallowing - speech - mastication - taste

Question 42

Which parts of the tongue does not contain taste buds?

Answer 42

-filiform papillae

Question 43

What are the 3 extrinsic muscles of the tongue and their innervation?

Answer 43

- styloglossus - genioglossus - hypoglossus - innervate by CNXII

Question 44

Which extrinsic muscle elevates and retracts tongue?

Answer 44

styloglossus

Question 45

What is the function of the genioglossus extrinsic muscle?

Answer 45

-depress and protrude tongue

Question 46

Which extrinsic muscle depresses and retracts tongue?

Answer 46

-hyoglossus

Question 47

Which intrinsic muscle shortens and curls tongue?

Answer 47

-superior longitudinal

Question 48

Which intrinsic muscle shortens and uncurls tongue?

Answer 48

-inferior longitudinal

Question 49

What is the function of the transverse and vertical intrinsic tongue muscles?

Answer 49

T-narrow tongue | V-flatten tongue

Question 50

What are the 3 arterial supplies of the tongue?

Answer 50

- lingual artery - sublingual artery - deep lingual artery

Question 51

The lingual artery branches out of which artery?

Answer 51

-external carotid artery

Question 52

What are the 2 floor muscles of the oral cavity?

Answer 52

- mylohyoid | - geniohyoid

Question 53

Which muscle supports the floor of oral cavity?

Answer 53

mylohyoid

Question 54

Which muscle elevates hyoid when mandible is fixed and depresses mandible when hyoid fixed?

Answer 54

geniohyoid

Question 55

Geniohyoid will elevate/depress hyoid when mandible fixed.

Answer 55

elevate

Question 56

Geniohyoid will elevate/depress mandible when hyoid fixed.

Answer 56

depress