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OrganHisto Final > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

What are the functions of the digestive system?

A

Ingestion, mastication, secretion, absorption, elimination of wastes, motility, hormone release, chemical digestion

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2
Q

What lines the oral cavity?

A

Oral mucosa

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3
Q

What is included in the oral cavity?

A

Tongue, teeth, minor and major salivary glands, tonsils, and lips

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4
Q

What are the three types of oral mucosa?

A

Masticatory, lining, and specialized mucosae

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5
Q

Where can we find masticatory mucosa?

A

Gingiva and hard palate

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6
Q

What is the surface epithelium of masticatory mucosa?

A

Keratinized or parakeratinized stratified squamous epithelium

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7
Q

What is important to note about the surface epithelium of the masticatory mucosa?

A

Superficial cells of parakeratinized stratified squamous epithelium keep their nuclei

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8
Q

What are the two parts of the lamina propria of the masticatory mucosa?

A

Papillary layer and reticular layer

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9
Q

What makes up the papillary layer of the lamina propria of the masticatory mucosa?

A

Thick loose connective tissue

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10
Q

What makes up the reticular layer of the lamina propria of the masticatory mucosa?

A

More dense connective tissue

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11
Q

What can be found in the papillary layer of the lamina propria of the masticatory mucosa?

A

Blood vessels, nerves, sensory receptors, and some Meissner’s corpuscles

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12
Q

Where can we find lining mucosa?

A

Soft palate, underside of tongue, floor of mouth, cheeks, and lips

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13
Q

What is the surface epithelium of the lining mucosa?

A

Nonkeratinized stratified squamous epithelium

OCCASIONALLY can be parakeratinized stratified squamous

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14
Q

What is the epithelium associated with the vermillion border of the lips (reddish part)?

A

Keratinized stratified squamous

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15
Q

Which is thicker: areas of nonkeratinized or keratinized stratified squamous epithelium?

A

Nonkeratininzed

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16
Q

What makes up the lamina propria of the lining mucosa?

A

Loose connective tissue with blood vessels and nerves

17
Q

What makes up the submucosa of the lining mucosa?

A

Dense connective tissue

18
Q

What can be found in the submucosa of the lining mucosa?

A

Minor salivary glands, sebaceous glands (mouth corners), larger blood vessels and nerves

19
Q

Where can the submucosa of the lining mucosa be found?

A

In most places

20
Q

Where can specialized mucosa be found?

A

Dorsal surface of tongue (papillae)

21
Q

What is the surface epithelium seen on filiform papillae of the specialized mucosa?

A

Keratinized stratified squamous

22
Q

What is the surface epithelium seen on all papillae besides filiform of the specialized mucosa?

A

Stratified squamous

23
Q

What are the general functions of the specialized mucosa?

A

Move food

Taste

24
Q

What is the distribution of thickness seen with the mucosa of the tongue?

A

Thicker dorsally, thinner and smoother posteriorly

25
Q

What are the different types of papillae of the tongue?

A

Filiform, fungiform, foliate, circumvallate (vallate)

26
Q

Small salivary (von Ebner) glands are associated with what type of papillae?

A

Vallate

27
Q

What is the function of the von Ebner glands?

A

Produce serious fluid to cleanse the taste buds on vallate papillae

28
Q

On which type of papillae are taste buds ABSENT?

A

Filiform

29
Q

What makes up the lamina propria of the tongue?

A

Loose connective tissue, possible adipose

30
Q

What is contained in the submucosa of the tongue?

A

Lingual salivary glands

31
Q

What is unique about the intrinsic tongue muscles?

A

No external attachment

32
Q

What is the intrinsic muscular arrangement of the tongue from dorsal to posterior?

A

Superior longitudinal muscle
Vertical muscles alternating with transverse muscles
Inferior longitudinal muscle

33
Q

What is the function of the intrinsic tongue muscles?

A

Changes shape of tongue which is important for phonation (speaking) and moving food

OrganHisto Final (5 decks)

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