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Body Structures H&N > 06b: Nasal and Oral Cavities > Flashcards

06b: Nasal and Oral Cavities Flashcards

1
Q

The nasal cavity is separated from (X) above by (Y) of the (Z) bone.

A 
X = anterior cranial fossa
Y = cribiform plate
Z = ethmoid bone
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2
Q

Where is the ethmoidal air sinus relative to nasal cavity?

A

Lateral to upper half of lateral nasal wall

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3
Q

Which space exists just lateral to ethmoidal air sinus?

A

Orbit

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4
Q

Where is the maxillary sinus relative to nasal cavity?

A

Lateral to lower half of lateral nasal wall

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5
Q

Below floor of nasal cavity is (X). What’s the partition that separates these two spaces?

A

X = oral cavity;

Hard palate

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6
Q

Posterior to nasal cavity is (X). What separates these two spaces?

A

X = nasopharynx

Nothing - they’re continuous

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7
Q

Roof of nasal cavity comprised of:

A
  1. Nasal cartilages and nasal bone
  2. Frontal bone (nasal spine)
  3. Ethmoid bone (Cribiform plate)
  4. Sphenoid (ant and inferior body)
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8
Q

Floor of nasal cavity comprised of:

A
  1. Maxilla (palatine process)

2. Palatine bone

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9
Q

Medial wall of nasal cavity is formed by (X), which is composed of (Y) components.

A 
X = nasal septum
Y = septal cartilage, vertical plate of ethmoid, vomer
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10
Q

Key contributors of lateral nasal wall:

A
  1. Maxilla
  2. Ethmoid
  3. Inferior concha
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11
Q

Which bone provides the superior, middle, and inferior conchae?

A

Superior and middle from ethmoid bone; inferior concha is separate bone

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12
Q

There are many ridges on (X) wall of nasal cavity to increase surface area for (Y).

A 
X = lateral;
Y = respiratory epithelium
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13
Q

The (X) divide nasal cavity into passages. List them.

A

X = conchae

  1. Sphenoethmoidal
  2. Superior, middle, and inferior meatus
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14
Q

(X) drains into sphenoethmoidal recess.

A

X = sphenoid

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15
Q

(X) drains into superior meatus.

A

X = posterior ethmoidal

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16
Q

(X) is a curved depression found in (Y) meatus of nasal cavity.

A 
X = hiatus semilunaris
Y = middle
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17
Q

(X) is a swelling of the (Y) bone on the superior border of hiatus semilunaris. What’s its function?

A 
X = bulla ehtmoidalis
Y = ethmoid

Drains middle ethmoidal sinuses

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18
Q

(X) drains into inferior meatus.

A

X = nasolacrimal duct

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19
Q

Blood supply to nasal cavities comes from which systems that anastamose at this location?

A

ICA and ECA

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20
Q

List arteries that supply nasal cavity and the source of each artery.

A
  1. Anterior and posterior ethmoidal (ICA)
  2. Lateral nasal (Facial artery, ECA)
  3. Greater palatine (ECA)
  4. Sphenopalatine (ECA)
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21
Q

Generally, which nerves responsible for giving off branches to innervate nasal cavity?

A

Trigeminal (V1 and V2 divisions)

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22
Q

Frontal sinus drains through (X) duct into the (Y) of nasal cavity.

A 
X = frontonasal
Y = hiatus semilunaris (of middle meatus)
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23
Q

Anterior ethmoidal cells drain into (X) via (Y).

A 
X = middle nasal meatus
Y = frontonasal duct
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24
Q

Middle ethmoidal cells drain into (X).

A

X = middle nasal meatus

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25
Q

Posterior ethmoidal cells drain into (X).

A

X = superior nasal meatus

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26
Q

Ethmoidal bulla is formed by (X) draining into (Y).

A 
X = middle ethmoidal cells
Y = middle meatus
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27
Q

Sphenoidal sinuses are located in (X) part of sphenoid bone.

A

X = body (may extend into wings)

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28
Q

T/F: The sphenoidal sinuses are unevenly divided and separated by bony septum.

A

True

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29
Q

Thin plate of bone separates sphenoid sinuses from:

A
  1. Optic nerves/chiasm
  2. Pituitary gland
  3. ICA
  4. Cavernous sinuses
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30
Q

Largest of the paranasal sinuses.

A

Maxillary

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31
Q

Medial wall of maxillary sinus forms (X) of (Y) cavity.

A 
X = inferior part of lateral wall
Y = nasal
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32
Q

Roof of maxillary sinus formed by (X) of (Y).

A 
X = floor
Y = orbit
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33
Q

Floor of maxillary sinus formed by (X) of (Y) cavity.

A 
X = alveolar part of maxilla
Y = oral
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34
Q

Each maxillary sinus drains (superiorly/inferiorly/laterally/medially) into (X) via (Y) openings.

A 
X = semilunar hiatus (middle nasal meatus)
Y = maxillary ostium
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35
Q

Vestibule in oral cavity exists between:

A

Teeth and mucosal lining lips/cheek

36
Q

Space between upper and lower dental arches is formally called:

A

Oral cavity proper

37
Q

External midline feature of lip (under nasal septum) is formally called:

A

Philtrum

38
Q

Buccinator is fairly (superficial/deep) and more closely related to (X) (mucosa/skin).

A

Deep;
X = buccal;
Mucosa

39
Q

(X) contracts to keep food in (Y) space and out of (Z) space.

A 
X = buccinator
Y = oral cavity
Z = oral vestibule
40
Q

(X) raphe is tendinous thickening of (Y). Buccinator has an attachment here.

A 
X = pterygomandibular
Y = buccopharyngeal fascia
41
Q

Parotid duct opens in (X) space, opposite to crown of (Y) molar.

A 
X = oral vestibule
Y = second
42
Q

Part(s) of tooth protruding into oral cavity.

A

Crown and neck

43
Q

Part(s) of tooth inserted into (X) bone by (Y) articulation.

A

Root;

X = alveolar;
Y = gomphosis
44
Q

Lateral posterior palate has which foramen?

A
  1. Greater palatine

2. Lesser palatine (immediate posterior)

45
Q

(X) located behind central incisors. Which nerves/vessels travel through here?

A

X = incisive canal/fossa

Nasopalatine nerve; Greater palatine artery

46
Q

(X) travels through greater palatine foramen.

A

X = greater palatine artery and nerve

47
Q

(X) travels through lesser palatine foramen.

A

X = lesser palatine artery and nerve

48
Q

When swallowing, (X) (rises/falls) to close off (naso/oro)pharynx.

A

X = soft palate;
Rises;
Nasopharynx

49
Q

List the (X) that compose soft palate.

A

X = muscles

  1. Levator and tensor veli palatini
  2. Palatoglossus
  3. Palatopharyngeus
  4. Musculus uvulae
50
Q

Levator veli palatini originates from (X) and inserts into (Y).

A 
X = temporal bone
Y = palatine aponeurosis
51
Q

The interlacing tendons of soft palate form (X), which attaches to posterior border of hard palate.

A

X = palatine aponeurosis

52
Q

(X) muscle acts to flatten and (tense/relax) the soft palate

A

X = tensor veli palatini

Tense

53
Q

Tensor veli palatini originates from (X) and inserts on (Y).

A 
X = scaphoid fossa (sphenoid bone) and auditory tube
Y = palatine aponeurosis
54
Q

Palatoglossus originates from (X) and inserts on (Y).

A 
X = soft palate
Y = lateral surface of intrinsic tongue muscles
55
Q

Palatoglossus actions.

A

Elevates posterior tongue and draws soft palate to tongue

56
Q

Palatopharyngeus originates from (X) and inserts on (Y).

A 
X = soft palate/palatine aponeurosis
Y = thyroid cartilage/pharynx
57
Q

Palatopharyngeus actions.

A

Elevate pharynx and larynx; tenses soft palate

58
Q

Musculus uvulae originates from (X) and acts to:

A

X = palatine bone/aponeurosis

Retract/elevate uvula

59
Q

V-shaped groove dividing tongue into posterior (X) portion and anterior (Y).

A 
X = 1/3
Y = 2/3

Sulcus terminalis

60
Q

(X) are 8-10 rows of structures along sulcus terminalis of (Y). They contain (Z).

A 
X = circumvallate papillae
Y = tongue
Z = taste buds
61
Q

Which papillae on tongue contain taste buds?

A

Circumvallate and fungiform papillae

62
Q

(X) papilla on tongue are keratinized and function to:

A

X = filiform;

Direct food

63
Q

What are the two surfaces of the tongue?

A

Dorsal and sublingual (ventral)

64
Q

(X) is a midline fold of (Y) that runs from lingual gingiva (posterior to central incisors) to ventral surface of tongue

A 
X = lingual frenulum
Y = mucous membrane
65
Q

Submandibular gland duct opening is called (X) and located where?

A

X = sublingual papilla

On either side of frenulum

66
Q

List the extrinsic muscles of tongue and the nerves that innervate each.

A
  1. Palatoglossus (CN X)
  2. Styloglossus (CN XII)
  3. Genioglossus (CN XII)
  4. Hyoglossus CN (XII)
67
Q

Genioglossus actions.

A

Depresses and protrudes tongue

68
Q

Hyoglossus actions.

A

Depresses and retracts tongue

69
Q

Styloglossus actions.

A

Retracts tongue

70
Q

T/F: All intrinsic tongue muscles innervated by hypoglossal nerve.

A

True

71
Q

List intrinsic muscles of tongue.

A
  1. Superior and inferior longitudinal
  2. Transverse
  3. Vertical
72
Q

Intrinsic muscles of tongue generally act to:

A

Change shape of tongue

73
Q

Main artery to tongue is (X) off of (Y). List its branches.

A 
X = lingual
Y = ECA
  1. Deep lingual
  2. Dorsal lingual
  3. Sublingual
74
Q

Deep lingual artery supplies:

A

Body of tongue

75
Q

Dorsal lingual artery supplies:

A

Root of tongue and palatine tonsils

76
Q

(X) artery supplies the tongue and sends branch to (Y) tonsils.

A 
X = dorsal
Y = palatine
77
Q

Sublingual artery supplies:

A

Floor of mouth and sublingual gland

78
Q

(X) veins can be seen on either side of lingual frenulum. They drain into (Y). All these veins eventually drain into (Z).

A 
X = deep lingual
Y = lingual
Z = IJV
79
Q

Floor of oral cavity primarily formed by:

A

Muscular diaphragm (mylohyoid and geniohyoid)

80
Q

Mylohyoid attachments.

A

Mylohyoid line of mandible; median raphe and hyoid bone

81
Q

T/F: Floor of oral cavity receives innervation from one nerve.

A

False

82
Q

Geniohyoid attachments.

A

Inferior mental spines (mandible); Hyoid

83
Q

Which glands/ducts present in floor of oral cavity?

A
  1. Sublingual gland and ducts

2. Submandibular ducts

84
Q

Lingual nerve is joined by (X) branch of CN 7 upon its passing of which landmark?

A

X = chora tympani

As it emerges between medial and lateral pterygoids

85
Q

On the floor of oral cavity, the lingual nerve loops (laterally/upward/downward) on surface of (X).

A

Upward;

X = hyoglossus muscle

86
Q

(X) and (Y) have a unique relationship in floor of mouth. (X) passes underneath (Y).

A 
X = lingual nerve
Y = submandibular duct
87
Q

En route to tongue, the hypoglossal nerve can be found (deep/superficial) to which key muscles.

A

Between mylohyoid and hyoglossus; so deep to mylohyoid and superficial to hyoglossus

Body Structures H&N (14 decks)

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