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HBS > Lecture 11 > Flashcards

Lecture 11 Flashcards

1
Q

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

A

orbital and palpebral

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2
Q

part of lacrimal gland located in lacrimal fossa in frontal bone

A

orbital

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3
Q

part of lacrimal gland inferior to levator palpebrae superioris

A

palpebral

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4
Q

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

A

true

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5
Q

What are the 7 bones of the orbit?

A
  • frontal
  • zygomatic
  • maxilla
  • lacrimal
  • sphenoid
  • ethmoid
  • palatine
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6
Q

What are the 3 passageways in the orbit?

A
  • optic canal
  • superior orbital fissure
  • inferior orbital fissure
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7
Q

Axes of the eyeball?

A
  • AP axis

- vertical axis

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8
Q

What are the 6 extraocular muscles?

A
  • medial rectus
  • lateral rectus
  • superior rectus
  • inferior rectus
  • superior oblique
  • inferior oblique
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9
Q

The superior oblique muscle is innervated by which cranial nerve?

A

-trochlear nerve

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10
Q

The lateral rectus muscle is innervated by which cranial nerve?

A

-abducens nerve

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11
Q

The oculomotor nerve innervates which 4 muscles?

A
  • superior rectus
  • medial rectus
  • inferior rectus
  • inferior oblique muscle
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12
Q

The optic canal is innervated by which cranial nerve?

A

CN2

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13
Q

The superior orbital fissure is innervated by which cranial nerves?

A

CN 3, 4, 5, 6

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14
Q

The inferior orbital fissure is innervated by which cranial nerve?

A

CN5

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15
Q

The orbital ring is innervated by which cranial nerves?

A

CN 2, 3, 5, 6

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16
Q

The superior ophthalmic vein passes through which 2 structures?

A

-superior orbital fissure and within the ring

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17
Q

The ophthalmic artery passes through which two structures?

A

optic canal and within the ring

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18
Q

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

A
  • IO: medial and upward

- SO: medial and downward

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19
Q

What is the major blood supply of the eye?

A
  • ophthalmic artery (major)

- central retinal artery (minor)

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20
Q

What region does the central retinal artery supply?

A

-nerve and retina tissue

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21
Q

What are the 3 intrinsic eye muscles?

A
  • ciliary muscle
  • sphincter pupillae
  • dilator pupillae
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22
Q

Which intrinsic muscles have parasympathetic innervation and which is sympathetic?

A
  • parasympathetic: ciliary muscle and sphincter pupillae

- sympathetic-dilator pupillae

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23
Q
  • (X) causes lens to become round
  • (Y) constricts the pupil.
  • (Z) dilates pupil
A

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

24
Q

Where is the oral cavity?

A
  • inferior to nasal cavities

- continue to oropharynx and pharynx

25
Q

Between teeth and lining of lips and cheeks

A

oral vestibule

26
Q

Where is oral cavity proper?

A
  • lateral-teeth and gums
  • superior-palates
  • posterior-to oropharynx
  • floor-tongue
27
Q

What are the 4 main parts of the lip?

A
  • philtrum
  • skin
  • fat
  • oral commissure
28
Q

What 2 things does the oral vestibule consist of?

A

-lips and cheeks

29
Q

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

A
  • hard-help chew food

- soft- close nasopharynx

30
Q

What 2 bones form hard palate?

A

-maxilla and palatine bone

31
Q

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

A
  • incisive fossa
  • greater palatine foramen
  • lesser palatine foramen
32
Q

Where is the nasopalatine nerve found?

A

-incisive fossa

33
Q

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

A
  • tensor veli palatini
  • levator veli palatini
  • palatopharyngeus
  • palatoglossus
  • musculus uvalae
34
Q

What is the function and innervation of tensor veli palatini?

A
  • tense soft palate and open pharyngotympanic tube when swallowing
  • innervate by CNV3
35
Q

What is the function and innervation of levator veli palatini?

A
  • elevates soft palate when swallowing

- innervate by CNX

36
Q

What is the function and innervation of palatopharyngeus?

A
  • elevate larynx and pharynx

- CNX

37
Q

What is the function and innervation of palatoglossus?

A
  • elevates 1/3 posterior tongue

- CNX

38
Q

What is the function and innervation of the musculus uvulae?

A
  • elevates uvula

- CNX

39
Q

What are the 3 major salivary glands?

A
  • parotid gland
  • submandibular gland
  • sublingual gland
40
Q

Which duct pierces the buccinator muscle to enter oral cavity?

A
  • facial nerve
  • external carotid artery
  • retromandibular vein
41
Q

What are the 4 main functions of the tongue?

A
  • swallowing
  • speech
  • mastication
  • taste
42
Q

Which parts of the tongue does not contain taste buds?

A

-filiform papillae

43
Q

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

A
  • styloglossus
  • genioglossus
  • hypoglossus
  • innervate by CNXII
44
Q

Which extrinsic muscle elevates and retracts tongue?

A

styloglossus

45
Q

What is the function of the genioglossus extrinsic muscle?

A

-depress and protrude tongue

46
Q

Which extrinsic muscle depresses and retracts tongue?

A

-hyoglossus

47
Q

Which intrinsic muscle shortens and curls tongue?

A

-superior longitudinal

48
Q

Which intrinsic muscle shortens and uncurls tongue?

A

-inferior longitudinal

49
Q

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

A

T-narrow tongue

V-flatten tongue

50
Q

What are the 3 arterial supplies of the tongue?

A
  • lingual artery
  • sublingual artery
  • deep lingual artery
51
Q

The lingual artery branches out of which artery?

A

-external carotid artery

52
Q

What are the 2 floor muscles of the oral cavity?

A
  • mylohyoid

- geniohyoid

53
Q

Which muscle supports the floor of oral cavity?

A

mylohyoid

54
Q

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

A

geniohyoid

55
Q

Geniohyoid will elevate/depress hyoid when mandible fixed.

A

elevate

56
Q

Geniohyoid will elevate/depress mandible when hyoid fixed.

A

depress

HBS (13 decks)

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