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Gross II > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

What are the divisions of the oral cavity

A

Vestibule: between the lips/cheeks and teeth and gums

Oral Cavity Proper: includes the tongue

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2
Q

What areas does the oral cavity communicate with

A

exterior world through rima oris (oral fissure)

oral pharynx posteriorly through the fauces

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3
Q

What are the contents of the vestibule

A

Frenulum Vestibule

Parotid Papillae

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4
Q

What are the contents of the oral cavity proper

A

Frenulum lingulae
sublingual carunculae
sublingual folds

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5
Q

What materials make up the tooth

A

Enamel-covers the crown

Dentine- ivory- most of body of tooth

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6
Q

What fills the pulp cavity

A

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

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7
Q

What lines the pulp cavity and what is the linings function

A

odontoblast– makes dentine

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8
Q

What does the periodontal ligament do

A

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

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9
Q

How many deciduous teeth are usually found

A 
20 Total
2 incisors
1 canine
0 premolars
2 molars
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10
Q

How many permanent teeth are usually found

A 
32 total 
2 incisors
1 canine
2 premolars
3 molars
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11
Q

What are the two parts of the tongue

A

Root

Body

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12
Q

What is the root of the tongue

A

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

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13
Q

Where is the terminal sulcus of the tongue found

A

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

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14
Q

What is the foramen cecum

A

shallow depression at the midpoint of the terminal sulcus

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15
Q

What is the dorsal median sulcus located

A

dividing the anterior 2/3 of tongue at the midline

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16
Q

What gives the tongue its rough appearance

A

lingual papilla

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17
Q

What are the 4 types of lingual papilla

A

Filiform Papilla
Fungiform Papilla
Vallate Papilla
Folate Papilla

18
Q

Which papilla are the most common

A

filiform papilla

19
Q

Where are the Vallate papilla located

A

V shaped line anterior to terminal sulcus

20
Q

What glands are located in the vallate papilla

A

Von Ebners Glands

21
Q

Which papilla have taste receptors

A

Fungiform Papilla
Vallate Papilla
Folate papilla

22
Q

What other structures are the taste buds located on

A

palate and epigolttis

23
Q

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

A

lingual tonsils

24
Q

What is the epiglottic valleculae

A

right and left depression between posterior base of tongue and epiglottis

25
Q

What innervates the anterior 2/3 of the tongue

A

general sensory: CN5, V3, lingual nerve

Taste Innervation: Chorda Tympani (branch of CN7)

26
Q

What innervates the posterior 1/3 of the tongue

A

General Sensory: lingual branches of CN9

Taste: Lingual branches of CN9

27
Q

What are the 4 extrinsic muscles of the tongue

A

genioglossus
styloglossus
hyoglossus
palatoglossus

28
Q

What is the origin of genioglossus

A

genion of mandible

29
Q

What is the innervation of genioglossus

A

CN7

30
Q

What is the action of genioglossus

A

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

31
Q

What is the origin of the styloglossus

A

styloid process

32
Q

What is the innervation of the styloglossus

A

CN7

33
Q

What is the action of the styloglossus

A

retract and elevate

34
Q

What is the origin of the hyoglossus

A

hyoid

35
Q

What is the innervation of hyoglossus

A

CN7

36
Q

What is the origin of palatoglossus

A

Palate

37
Q

What is the innervation of palatoglossus

A

CN10

38
Q

What is the action of the palatoglossus

A

fauces sphincter and elevates the tongue

39
Q

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

A

all within the tongue

40
Q

What is the innervation of the intrinsic muscles of the tongue

A

CN7

41
Q

What is the action of the intrinsic muscles of the tongue

A

fine tongue movement–speech

42
Q

What is the pattern of innervation for the tongue

A

All muscles are innervated by CN7 except palatoglossus

Gross II (13 decks)

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