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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
Where is the origination of the sympathetic innervation to the submandibular and sublingual glands?
External carotid plexus
26
What cranial nerve is found traveling between the submandibular gland and the hyoglossus muscle?
CN XII
27
T/F: CN XII runs inferior to the lingual nerve.
TRUE
28
Where does CN XII terminate?
Posterior tongue (motor innervation)
29
What muscle does CN IX run on the lateral surface of on its way to the pharynx?
Stylopharyngeous
30
Between which constrictor levels does CN IX run between?
Superior and middle
31
Where does CN IX terminate?
Posterior tongue (sensory and taste)
32
What does it mean to be an intrinsic muscle of the tongue?
Insertion and origin are all within the tongue
33
What are the four extrinsic muscles of the tongue?
1. Palatoglossus 2. Styloglossus 3. Hyoglossus 4. Genioglossus
34
What are the three types of intrinsic muscle fibers of the tongue?
1. Vertical 2. Transverse 3. Superior and Inferior Long
35
What muscle provides bulk at the base of the tongue?
Genioglossus
36
What is the action of the genioglossus muscle?
Protrude the tongue
37
If someone were to stick out their tongue and it deviated to their left, what muscle and nerve could be affected?
Damaged left CN XII resulting in atrophied and weak left genioglossus
38
What artery provides most supply for superficial structures of the oral cavity?
Facial artery
39
What artery supplies the buccinator muscle?
Maxillary artery (via buccal artery)
40
The lingual artery gives off the ________, and continues anterior until it splits into _______ and _______. (branches of tongue region)
1. Dorsal lingual 2. Deep lingual 3. Sublingual
41
Where does the venous drainage from the oral cavity drain to?
IJV
42
What nerve provides taste for anterior 2/3 of tongue?
Chorda tympani (CN VII)
43
What nerve provides taste and general sensation for posterior 1/3 of tongue?
CN IX (lingual branches)
44
What nerve provides taste and general sensation for the root of the tongue and epiglottis?
CN X (superior laryngeal nerve)
45
What nerve provides for general sensation of the anterior 2/3 of the tongue?
V3 (lingual nerve)
46
What major nerve gives off the PSA, MSA, and ASA nerves?
Maxillary (V2)
47
What major artery gives off ASA and MSA arteries?
Infaorbital artery
48
What major artery gives off PSA and Inferior Alveolar arteries?
Maxillary artery
49
Where are all sympathetic post-ganglionic nerves of the face leaving from?
Superior cervical trunk
50
Which extrinsic tongue muscle is not innervated by CN XII?
Palatoglossus (CN X)

SP17: Anatomy Test 2 (13 decks)

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