06b: Nasal and Oral Cavities Flashcards Preview

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Flashcards in 06b: Nasal and Oral Cavities Deck (87):
1

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

X = anterior cranial fossa
Y = cribiform plate
Z = ethmoid bone

2

Where is the ethmoidal air sinus relative to nasal cavity?

Lateral to upper half of lateral nasal wall

3

Which space exists just lateral to ethmoidal air sinus?

Orbit

4

Where is the maxillary sinus relative to nasal cavity?

Lateral to lower half of lateral nasal wall

5

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

X = oral cavity;
Hard palate

6

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

X = nasopharynx

Nothing - they're continuous

7

Roof of nasal cavity comprised of:

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

8

Floor of nasal cavity comprised of:

1. Maxilla (palatine process)
2. Palatine bone

9

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

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

10

Key contributors of lateral nasal wall:

1. Maxilla
2. Ethmoid
3. Inferior concha

11

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

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

12

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

X = lateral;
Y = respiratory epithelium

13

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

X = conchae

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

14

(X) drains into sphenoethmoidal recess.

X = sphenoid

15

(X) drains into superior meatus.

X = posterior ethmoidal

16

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

X = hiatus semilunaris
Y = middle

17

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

X = bulla ehtmoidalis
Y = ethmoid

Drains middle ethmoidal sinuses

18

(X) drains into inferior meatus.

X = nasolacrimal duct

19

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

ICA and ECA

20

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

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

21

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

Trigeminal (V1 and V2 divisions)

22

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

X = frontonasal
Y = hiatus semilunaris (of middle meatus)

23

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

X = middle nasal meatus
Y = frontonasal duct

24

Middle ethmoidal cells drain into (X).

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