Oral Cavity Flashcards Preview

Gross II > Oral Cavity > Flashcards

Flashcards in Oral Cavity Deck (42):
1

What are the divisions of the oral cavity

Vestibule: between the lips/cheeks and teeth and gums
Oral Cavity Proper: includes the tongue

2

What areas does the oral cavity communicate with

exterior world through rima oris (oral fissure)
oral pharynx posteriorly through the fauces

3

What are the contents of the vestibule

Frenulum Vestibule
Parotid Papillae

4

What are the contents of the oral cavity proper

Frenulum lingulae
sublingual carunculae
sublingual folds

5

What materials make up the tooth

Enamel-covers the crown
Dentine- ivory- most of body of tooth

6

What fills the pulp cavity

Dental/vascular pulp: loose CT w/ vessels and nerves

7

What lines the pulp cavity and what is the linings function

odontoblast-- makes dentine

8

What does the periodontal ligament do

attaches the root of the tooth to the alveolar process -- cementum attaches the ligament membrane to the root of tooth

9

How many deciduous teeth are usually found

20 Total
2 incisors
1 canine
0 premolars
2 molars

10

How many permanent teeth are usually found

32 total
2 incisors
1 canine
2 premolars
3 molars

11

What are the two parts of the tongue

Root
Body

12

What is the root of the tongue

Muscles of the tongue that are attached to the hyoid bone and the mandible and styloid process
Provides a firm base for tongue movement

13

Where is the terminal sulcus of the tongue found

dividing the tongue into a posterior 1/3 and anterior 2/3

14

What is the foramen cecum

shallow depression at the midpoint of the terminal sulcus

15

What is the dorsal median sulcus located

dividing the anterior 2/3 of tongue at the midline

16

What gives the tongue its rough appearance

lingual papilla

17

What are the 4 types of lingual papilla

Filiform Papilla
Fungiform Papilla
Vallate Papilla
Folate Papilla

18

Which papilla are the most common

filiform papilla

19

Where are the Vallate papilla located

V shaped line anterior to terminal sulcus

20

What glands are located in the vallate papilla

Von Ebners Glands

21

Which papilla have taste receptors

Fungiform Papilla
Vallate Papilla
Folate papilla

22

What other structures are the taste buds located on

palate and epigolttis

23

What lymphoid tissue is located on the posterior 1/3 of the tongue

lingual tonsils

24

What is the epiglottic valleculae

right and left depression between posterior base of tongue and epiglottis

25

What innervates the anterior 2/3 of the tongue

general sensory: CN5, V3, lingual nerve
Taste Innervation: Chorda Tympani (branch of CN7)

26

What innervates the posterior 1/3 of the tongue

General Sensory: lingual branches of CN9
Taste: Lingual branches of CN9

27

What are the 4 extrinsic muscles of the tongue

genioglossus
styloglossus
hyoglossus
palatoglossus

28

What is the origin of genioglossus

genion of mandible

29

What is the innervation of genioglossus

CN7

30

What is the action of genioglossus

Bilaterally: protrusion and depression of tongue
Unilaterally: tongue will deviate towards contralateral side when protruding

31

What is the origin of the styloglossus

styloid process

32

What is the innervation of the styloglossus

CN7

33

What is the action of the styloglossus

retract and elevate

34

What is the origin of the hyoglossus

hyoid

35

What is the innervation of hyoglossus

CN7

36

What is the origin of palatoglossus

Palate

37

What is the innervation of palatoglossus

CN10

38

What is the action of the palatoglossus

fauces sphincter and elevates the tongue

39

What are the origins and insertions of the intrinsic muscles of the tongue

all within the tongue

40

What is the innervation of the intrinsic muscles of the tongue

CN7

41

What is the action of the intrinsic muscles of the tongue

fine tongue movement--speech

42

What is the pattern of innervation for the tongue

All muscles are innervated by CN7 except palatoglossus