06b: Nasal and Oral Cavities Flashcards
(87 cards)
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
2
Q
Where is the ethmoidal air sinus relative to nasal cavity?
A
Lateral to upper half of lateral nasal wall
3
Q
Which space exists just lateral to ethmoidal air sinus?
A
Orbit
4
Q
Where is the maxillary sinus relative to nasal cavity?
A
Lateral to lower half of lateral nasal wall
5
Q
Below floor of nasal cavity is (X). What’s the partition that separates these two spaces?
A
X = oral cavity;
Hard palate
6
Q
Posterior to nasal cavity is (X). What separates these two spaces?
A
X = nasopharynx
Nothing - they’re continuous
7
Q
Roof of nasal cavity comprised of:
A
- Nasal cartilages and nasal bone
- Frontal bone (nasal spine)
- Ethmoid bone (Cribiform plate)
- Sphenoid (ant and inferior body)
8
Q
Floor of nasal cavity comprised of:
A
- Maxilla (palatine process)
2. Palatine bone
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
10
Q
Key contributors of lateral nasal wall:
A
- Maxilla
- Ethmoid
- Inferior concha
11
Q
Which bone provides the superior, middle, and inferior conchae?
A
Superior and middle from ethmoid bone; inferior concha is separate bone
12
Q
There are many ridges on (X) wall of nasal cavity to increase surface area for (Y).
A
X = lateral; Y = respiratory epithelium
13
Q
The (X) divide nasal cavity into passages. List them.
A
X = conchae
- Sphenoethmoidal
- Superior, middle, and inferior meatus
14
Q
(X) drains into sphenoethmoidal recess.
A
X = sphenoid
15
Q
(X) drains into superior meatus.
A
X = posterior ethmoidal
16
Q
(X) is a curved depression found in (Y) meatus of nasal cavity.
A
X = hiatus semilunaris Y = middle
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
18
Q
(X) drains into inferior meatus.
A
X = nasolacrimal duct
19
Q
Blood supply to nasal cavities comes from which systems that anastamose at this location?
A
ICA and ECA
20
Q
List arteries that supply nasal cavity and the source of each artery.
A
- Anterior and posterior ethmoidal (ICA)
- Lateral nasal (Facial artery, ECA)
- Greater palatine (ECA)
- Sphenopalatine (ECA)
21
Q
Generally, which nerves responsible for giving off branches to innervate nasal cavity?
A
Trigeminal (V1 and V2 divisions)
22
Q
Frontal sinus drains through (X) duct into the (Y) of nasal cavity.
A
X = frontonasal Y = hiatus semilunaris (of middle meatus)
23
Q
Anterior ethmoidal cells drain into (X) via (Y).
A
X = middle nasal meatus Y = frontonasal duct
24
Q
Middle ethmoidal cells drain into (X).
A
X = middle nasal meatus
25
Posterior ethmoidal cells drain into (X).
X = superior nasal meatus
26
Ethmoidal bulla is formed by (X) draining into (Y).
```
X = middle ethmoidal cells
Y = middle meatus
```
27
Sphenoidal sinuses are located in (X) part of sphenoid bone.
X = body (may extend into wings)
28
T/F: The sphenoidal sinuses are unevenly divided and separated by bony septum.
True
29
Thin plate of bone separates sphenoid sinuses from:
1. Optic nerves/chiasm
2. Pituitary gland
3. ICA
4. Cavernous sinuses
30
Largest of the paranasal sinuses.
Maxillary
31
Medial wall of maxillary sinus forms (X) of (Y) cavity.
```
X = inferior part of lateral wall
Y = nasal
```
32
Roof of maxillary sinus formed by (X) of (Y).
```
X = floor
Y = orbit
```
33
Floor of maxillary sinus formed by (X) of (Y) cavity.
```
X = alveolar part of maxilla
Y = oral
```
34
Each maxillary sinus drains (superiorly/inferiorly/laterally/medially) into (X) via (Y) openings.
```
X = semilunar hiatus (middle nasal meatus)
Y = maxillary ostium
```
35
Vestibule in oral cavity exists between:
Teeth and mucosal lining lips/cheek
36
Space between upper and lower dental arches is formally called:
Oral cavity proper
37
External midline feature of lip (under nasal septum) is formally called:
Philtrum
38
Buccinator is fairly (superficial/deep) and more closely related to (X) (mucosa/skin).
Deep;
X = buccal;
Mucosa
39
(X) contracts to keep food in (Y) space and out of (Z) space.
```
X = buccinator
Y = oral cavity
Z = oral vestibule
```
40
(X) raphe is tendinous thickening of (Y). Buccinator has an attachment here.
```
X = pterygomandibular
Y = buccopharyngeal fascia
```
41
Parotid duct opens in (X) space, opposite to crown of (Y) molar.
```
X = oral vestibule
Y = second
```
42
Part(s) of tooth protruding into oral cavity.
Crown and neck
43
Part(s) of tooth inserted into (X) bone by (Y) articulation.
Root;
```
X = alveolar;
Y = gomphosis
```
44
Lateral posterior palate has which foramen?
1. Greater palatine
| 2. Lesser palatine (immediate posterior)
45
(X) located behind central incisors. Which nerves/vessels travel through here?
X = incisive canal/fossa
Nasopalatine nerve; Greater palatine artery
46
(X) travels through greater palatine foramen.
X = greater palatine artery and nerve
47
(X) travels through lesser palatine foramen.
X = lesser palatine artery and nerve
48
When swallowing, (X) (rises/falls) to close off (naso/oro)pharynx.
X = soft palate;
Rises;
Nasopharynx
49
List the (X) that compose soft palate.
X = muscles
1. Levator and tensor veli palatini
2. Palatoglossus
3. Palatopharyngeus
4. Musculus uvulae
50
Levator veli palatini originates from (X) and inserts into (Y).
```
X = temporal bone
Y = palatine aponeurosis
```
51
The interlacing tendons of soft palate form (X), which attaches to posterior border of hard palate.
X = palatine aponeurosis
52
(X) muscle acts to flatten and (tense/relax) the soft palate
X = tensor veli palatini
Tense
53
Tensor veli palatini originates from (X) and inserts on (Y).
```
X = scaphoid fossa (sphenoid bone) and auditory tube
Y = palatine aponeurosis
```
54
Palatoglossus originates from (X) and inserts on (Y).
```
X = soft palate
Y = lateral surface of intrinsic tongue muscles
```
55
Palatoglossus actions.
Elevates posterior tongue and draws soft palate to tongue
56
Palatopharyngeus originates from (X) and inserts on (Y).
```
X = soft palate/palatine aponeurosis
Y = thyroid cartilage/pharynx
```
57
Palatopharyngeus actions.
Elevate pharynx and larynx; tenses soft palate
58
Musculus uvulae originates from (X) and acts to:
X = palatine bone/aponeurosis
Retract/elevate uvula
59
V-shaped groove dividing tongue into posterior (X) portion and anterior (Y).
```
X = 1/3
Y = 2/3
```
Sulcus terminalis
60
(X) are 8-10 rows of structures along sulcus terminalis of (Y). They contain (Z).
```
X = circumvallate papillae
Y = tongue
Z = taste buds
```
61
Which papillae on tongue contain taste buds?
Circumvallate and fungiform papillae
62
(X) papilla on tongue are keratinized and function to:
X = filiform;
| Direct food
63
What are the two surfaces of the tongue?
Dorsal and sublingual (ventral)
64
(X) is a midline fold of (Y) that runs from lingual gingiva (posterior to central incisors) to ventral surface of tongue
```
X = lingual frenulum
Y = mucous membrane
```
65
Submandibular gland duct opening is called (X) and located where?
X = sublingual papilla
On either side of frenulum
66
List the extrinsic muscles of tongue and the nerves that innervate each.
1. Palatoglossus (CN X)
2. Styloglossus (CN XII)
3. Genioglossus (CN XII)
4. Hyoglossus CN (XII)
67
Genioglossus actions.
Depresses and protrudes tongue
68
Hyoglossus actions.
Depresses and retracts tongue
69
Styloglossus actions.
Retracts tongue
70
T/F: All intrinsic tongue muscles innervated by hypoglossal nerve.
True
71
List intrinsic muscles of tongue.
1. Superior and inferior longitudinal
2. Transverse
3. Vertical
72
Intrinsic muscles of tongue generally act to:
Change shape of tongue
73
Main artery to tongue is (X) off of (Y). List its branches.
```
X = lingual
Y = ECA
```
1. Deep lingual
2. Dorsal lingual
3. Sublingual
74
Deep lingual artery supplies:
Body of tongue
75
Dorsal lingual artery supplies:
Root of tongue and palatine tonsils
76
(X) artery supplies the tongue and sends branch to (Y) tonsils.
```
X = dorsal
Y = palatine
```
77
Sublingual artery supplies:
Floor of mouth and sublingual gland
78
(X) veins can be seen on either side of lingual frenulum. They drain into (Y). All these veins eventually drain into (Z).
```
X = deep lingual
Y = lingual
Z = IJV
```
79
Floor of oral cavity primarily formed by:
Muscular diaphragm (mylohyoid and geniohyoid)
80
Mylohyoid attachments.
Mylohyoid line of mandible; median raphe and hyoid bone
81
T/F: Floor of oral cavity receives innervation from one nerve.
False
82
Geniohyoid attachments.
Inferior mental spines (mandible); Hyoid
83
Which glands/ducts present in floor of oral cavity?
1. Sublingual gland and ducts
| 2. Submandibular ducts
84
Lingual nerve is joined by (X) branch of CN 7 upon its passing of which landmark?
X = chora tympani
As it emerges between medial and lateral pterygoids
85
On the floor of oral cavity, the lingual nerve loops (laterally/upward/downward) on surface of (X).
Upward;
| X = hyoglossus muscle
86
(X) and (Y) have a unique relationship in floor of mouth. (X) passes underneath (Y).
```
X = lingual nerve
Y = submandibular duct
```
87
En route to tongue, the hypoglossal nerve can be found (deep/superficial) to which key muscles.
Between mylohyoid and hyoglossus; so deep to mylohyoid and superficial to hyoglossus
