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SP17: Anatomy Test 2 > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

What structure marks the posterior extent of the oral cavity proper?

A

Palatoglossal arches

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2
Q

What causes the color change at the vermillion border?

A

Larger deep papillae in dermis push vasculature closer to surface

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3
Q

When looking in the mouth, what is the first arch seen in the back of the hard palate? The 2nd arch?

A

1st: Palatoglossal arch
2nd: Palatopharyngeal arch

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4
Q

What structure lies between the palatoglossal arch and the palatopharyngeal arch?

A

Palatine tonsils

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5
Q

What connects the tensor veli palatini to the soft palate?

A

Palatine aponeurosis

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6
Q

What is the test for the levator veli palatini muscle?

A

Say “ah”

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7
Q

What is the only muscle to elevate the soft palate above the neutral position?

A

Levator palatini muscle

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8
Q

What nerve innervates the levator palatini muscle?

A

Pharyngeal branch of CN X

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9
Q

What branches of the maxillary artery supply the palate?

A

Descending palatine -> greater (anterior palate) and lesser (posterior palate) palatine arteries

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10
Q

What branch of the facial artery supplies the palate?

A

Ascending palatine artery

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11
Q

How does the palatine artery get to the palate to supply it?

A

ECA -> Ascending pharyngeal -> Palatine artery

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12
Q

What plexuses supply venous drainage for the palate?

A

Pterygoid and pharyngeal plexuses

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13
Q

What branches of V2 innervate the palate?

A
  1. Nasopalatine (anterior hard palate)
  2. Greater palatine (hard palate)
  3. Lesser palatine (soft palate)
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14
Q

What nerve supplies motor innervation to the tensor veli palatini?

A

Mandibular nerve (V3)

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15
Q

What muscles of the palate are supplied by CN X?

A
  1. Levator veli palatini
  2. Palatoglossus
  3. Palatopharyngeus
  4. Musculus uvulae
  5. Salpingopharyngeus (via pharyngeal plexus)
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16
Q

The palatine tonsil has an extensive arteriol supply. What 5 arteries ultimately supply the palatine tonsils?

A
  1. Lesser palatine
  2. Ascending pharyngeal
  3. Ascending palatine
  4. Facial
  5. Lingual
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17
Q

What nerve is in danger of being damaged in a tonsillectomy?

A

CN IX

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18
Q

What nerve does the submandibular duct cross twice?

A

Lingual nerve

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19
Q

What nerve is the lingual nerve a branch from?

A

V3

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20
Q

What two muscles does the lingual nerve emerge between?

A

Lateral and medial pterygoid muscles

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21
Q

What structure is found suspended from the lingual nerve near the third molar area?

A

Submandibular ganglion

22
Q

What nerve that travels along with the lingual nerve ends up in the submandibular ganglion?

A

Chorda tympani

23
Q

What types of nerve fibers are found on chorda tympani before getting to the submandibular ganglion?

A

Preganglionic parasympathetic (CN VII)

24
Q

What types of fibers exit the submandibular ganglion traveling towards the submandibular and sublingual glands?

A

Postganglionic parasympathetic

25
Q

Where is the origination of the sympathetic innervation to the submandibular and sublingual glands?

A

External carotid plexus

26
Q

What cranial nerve is found traveling between the submandibular gland and the hyoglossus muscle?

A

CN XII

27
Q

T/F: CN XII runs inferior to the lingual nerve.

A

TRUE

28
Q

Where does CN XII terminate?

A

Posterior tongue (motor innervation)

29
Q

What muscle does CN IX run on the lateral surface of on its way to the pharynx?

A

Stylopharyngeous

30
Q

Between which constrictor levels does CN IX run between?

A

Superior and middle

31
Q

Where does CN IX terminate?

A

Posterior tongue (sensory and taste)

32
Q

What does it mean to be an intrinsic muscle of the tongue?

A

Insertion and origin are all within the tongue

33
Q

What are the four extrinsic muscles of the tongue?

A
  1. Palatoglossus
  2. Styloglossus
  3. Hyoglossus
  4. Genioglossus
34
Q

What are the three types of intrinsic muscle fibers of the tongue?

A
  1. Vertical
  2. Transverse
  3. Superior and Inferior Long
35
Q

What muscle provides bulk at the base of the tongue?

A

Genioglossus

36
Q

What is the action of the genioglossus muscle?

A

Protrude the tongue

37
Q

If someone were to stick out their tongue and it deviated to their left, what muscle and nerve could be affected?

A

Damaged left CN XII resulting in atrophied and weak left genioglossus

38
Q

What artery provides most supply for superficial structures of the oral cavity?

A

Facial artery

39
Q

What artery supplies the buccinator muscle?

A

Maxillary artery (via buccal artery)

40
Q

The lingual artery gives off the ________, and continues anterior until it splits into _______ and _______. (branches of tongue region)

A
  1. Dorsal lingual
  2. Deep lingual
  3. Sublingual
41
Q

Where does the venous drainage from the oral cavity drain to?

A

IJV

42
Q

What nerve provides taste for anterior 2/3 of tongue?

A

Chorda tympani (CN VII)

43
Q

What nerve provides taste and general sensation for posterior 1/3 of tongue?

A

CN IX (lingual branches)

44
Q

What nerve provides taste and general sensation for the root of the tongue and epiglottis?

A

CN X (superior laryngeal nerve)

45
Q

What nerve provides for general sensation of the anterior 2/3 of the tongue?

A

V3 (lingual nerve)

46
Q

What major nerve gives off the PSA, MSA, and ASA nerves?

A

Maxillary (V2)

47
Q

What major artery gives off ASA and MSA arteries?

A

Infaorbital artery

48
Q

What major artery gives off PSA and Inferior Alveolar arteries?

A

Maxillary artery

49
Q

Where are all sympathetic post-ganglionic nerves of the face leaving from?

A

Superior cervical trunk

50
Q

Which extrinsic tongue muscle is not innervated by CN XII?

A

Palatoglossus (CN X)

SP17: Anatomy Test 2 (13 decks)

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