Head and Neck: Oral and Nasal Cavities Flashcards Preview

BU Anatomy > Head and Neck: Oral and Nasal Cavities > Flashcards

Flashcards in Head and Neck: Oral and Nasal Cavities Deck (82):
1

What seprates nasal cavity from anterior cranial fossa?

Cribriform plate of ethmoid bone

2

Which air sinus sits lateral to the upper half of the lateral wall of the nasal cavity?

Ethmoidal air sinus

3

What space is lateral to ethmoid air sinus?

The medial wall of the orbit

4

Lateral to lower half of lateral nasal wall?

Maxillary air sinus

5

What space sits below the floor of the nasal cavity?

Oral cavity

6

What structure separates the nasal from oral cavity?

Hard palate

7

Nasal cavity is continuous with what structure posteriorly?

Nasopharynx

8

What structures contribute to the roof of the nasal cavity?

Nasal cartilage
Nasal bones
Nasal spine of frontal bone
Cribriform plate of ethmoid bone
Inf./Ant. portions of body of sphenoid bone

9

Which structures contribute to floor of nasal cavity?

Palatine processes of maxilla
Horizontal plates of palatine bones

10

Structures of medial wall of nasal cavity? (3)

Septal cartilage
Vomer
Perpendicular (vertical) plate of ethmoid bone

11

Skeletal structures of lateral wall of nasal cavity (3)?

Maxilla
Ethmoid bone - sup. and middle conchae
Inferior concha

12

Sphenoethmoidal recess

located directly posterior to superior concha and anterior to sphenoid bone

13

Meatus

In nasal cavity all meatuses are found just inferior to concha

14

Drainage of sphenoid sinus?

Sphenoethmoidal recess

15

Drainage of posterior ethmoidal sinuses?

Superior meatus

16

Drainage of anterior ethmoidal sinus?

Hiatus semilunaris in middle meatus

17

Drainage of frontal sinus?

Hiatus semilunaris in middle meatus

18

Drainage of maxillary sinsus?

Hiatus semilunaris in middle meatus

19

Hiatus semilunaris

found in middle meatus; drains the anterior ethmoidal, maxillary and frontal sinus

20

Drainage of middle ethmoidal sinus?

Bulla ethmoidalis

21

Bulla ethmoidalis

Swelling on superior border of hiatus semilunaris

22

Drainage of nasolacrimal duct?

Inferior meatus

23

Anterior and Posterior ethmoidal arteries

Come off of opthalmic artery - ICA

24

Lateral nasal branches of facial artery

Branches of ECA

25

Greater palatine artery

Branch off of ECA

26

Sphenopalatine artery

terminal branch of maxillary artery ECA

27

Frontal sinus

located between inner and outer tables of frontal bone; drains to semilunar hiatus in middle meatus

28

Ethmoidal sinus = ethmoidal air cells

3 regions
Anterior - drain into semilunar hiatus in middle meatus

Middle - ethmoidal bulla

Posterior - superior meatus

29

Sphenoidal sinus

drains into sphenoethmoidal recess

30

Sphenoidal sinus is close to what structures?

Optic nerves and chiasm
Pituitary gland
ICA
Cavernous sinus

31

Maxillary sinus medial wall

Shared with nasal cavity

32

Maxillary sinus roof

Floor of orbit

33

Maxillary sinus floor

Roof of oral cavity

34

Maxillary sinus drainage port?

maxillary ostium -> semilunar hiatus

35

Oral vesitbule

space between teeth and mucosal lining of lips and cheeks

36

Oral cavity proper

space between upper and lower dental arches

37

Buccinator attachments

Alveolar process of maxilla and mandible and pterygomandibular raphe

38

Pterygomandibular raphe

thickening of the buccopharyngeal fascia; also origin of superior pharyngeal constrictor

39

Buccinator innervation

Buccal branch of facial nerve

40

Parotid gland

opens into oral vestibule by way of parotid papilla opposite 2nd molar; pierces the buccinator muscle

41

Palate

formed by hard palate (bone) and soft palate (muscle)

42

Hard palate

palatine process of maxilla + horizontal plate of palatine bone

43

Foramina associated with hard palate

Incisive canal/fossa
Greater palatine foramen
Lesser palatine foramen

44

Greater palatine formamen

Greater palatine artery/nerve

45

Lesser palatine forament

Lesser palatine artery/nerve

46

Incisive canal

Greater palatine artery and Nasopalatine n.

47

Muscles that make up the soft palate

Palatoglossus
Palatopharyngeus
Tensor veli palatini
Levator veli palatini
Musculus uvulae

48

Both levator veli and tensor veli palatini insert where?

Palatine aponeurosis

49

Levator veli palatini originates from where?

Temporal bone

50

Tensor veli palatini originates from where?

Scaphoid fossa of sphenoid bone and auditory tube

51

Tonsils

aggregates of lymphoid tissue

52

3 locations of tonsils

palatine, lingual and pharyngeal

53

Palatine tonsils

between palatoglossus and palatopharyngeus muscles

54

Lingual tonsils

dorsal surface of posterior tongue

55

Pharyngeal tonsils

roof of nasal pharynx = adenoids

56

Sulcus terminalis

division between posterior 2/3 and anterior 1/3 of tongue

57

Circumvallate papillae

structures containing the taste buds near the sulcus terminalis

58

Filiform papilla

rough; keratinized direct food

59

Fungiform papilla

contain taste buds

60

Lingual frenulum

midline fold of mucous membrane on ventral surface of tongue

61

Sublingual papilla

on either side of frenulum and opening of duct from submandibular glands

62

Extrinsic tongue muscles

Genioglossus
Hyoglossus
Styloglossus

63

Genioglossus Origin

Superior mental spine

64

Genioglossus Insertion

Superior fibers - tip of tongue
Middle fibers - dorsum of tongue
Inferior fibers - into body of hyoid bone

65

Hyoglossus Origin

Upper surface of greater horn and lesser horn of hyoid bone

66

Hyoglossus insertion

Lateral aspect of tongue

67

Styloglossus Origin

Anterior aspect of styloid process

68

Styloglossus Insertion

Lateral aspect of tongue

69

Styloglossus action

retracts tongue

70

Hyoglossus action

Depress and retract tongue

71

Genioglossus action

depress and protrude tongue

72

Palatoglossus action

elevates posterior part of tongue

73

Palatoglossus innervation

CN X

74

Genioglossus, hyoglossus and styloglossus

CN XII

75

Intrinsic muscle of tongue

Change shape of tongue; CNXII

76

Extrinsic muscles of tongue

Change position of tongue

77

Mylohyoid muscle

floor of oral cavity; mylohyoid line of mandible to median raphe and hyoid bone

78

Mylohyoid muscle innervation

N. to mylohyoid off of inferior alveolar nerve (V3)

79

Geniohyoid muscle

Inferior mental spines of mandible to body of hyoid bone

80

Geniohyoid innervation

C1

81

Lingual nerve and submandibular duct

Lingual nerve travels lower than submandibular duct

82

Hypoglossal nerve

Can be found between mylohyoid and hyoglossus nerve