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Physiology > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

The superior border of the oral cavity consists of what?

A

Hard palate and soft palate

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2
Q

The anterior border consists of what?

A

Lips

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3
Q

The lateral walls consist of what?

A

Cheeks

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4
Q

The inferior border consists of what?

A

Mucous membrane covering mylohyoid muscle and is mainly occupied by the tongue

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5
Q

The posterior border consists of what?

A

Oropharyngeal isthmus

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6
Q

The vertical groove on the midline of he upper lip is called what?

A

Philtrum

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7
Q

What are the three types of oral mucosa?

A

Lining
Masticatory
Specialized

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8
Q

What are the non keratinocytes in the epithelia?

A

Langerhans cells
Merkel cells
Melanocytes
Lymphocytes/leukocytes

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9
Q

What layer does the submucosa lack that intestinal mucosa has?

A

Muscularis mucosa

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10
Q

What is characteristic of specialized oral mucosa?

A
  • Lacks submucosa

- lamina propia attaches directly to the bone

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11
Q

Where is masticatory mucosa found?

A

Gingiva

Hard palate

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12
Q

Where is lining mucosa found?

A 
Lips
Cheeks
Floor of mouth
Soft palate
Ventral tongue
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13
Q

Where is specialized mucosa found?

A

Dorsum of tongue

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14
Q

What are the three types of stratified squamous epithelium found in the oral mucosa?

A

Orthokeratinized (no nuclei)
Parakeratinized (some nuclei)
Non-keratinized

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15
Q

What are the 4 layers of keratinized epithelium?

A

1-stratum corneum (no nuclei/keratin layer)
2-stratum granulosum (keratin starts forming)
3-stratum spinosum (desmosomes)
4-stratum basale (stem cells, Hemidesmosomes)

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16
Q

How can you tell where the mucogingival junction is? (Looking at a slide)

A
  • Attached is ortho keratinized with dense lamina propria

- alveolar is non-keratinized and has loose lamina propria

17
Q

The vermilion border has a ______ keratin layer

A

Thin

18
Q

The labial mucosa is _____ keratinized and has _______ epithelium

A

Non, thick

19
Q

What role do merkel cells play?

A

Essentially nerve cells in the basal layer of gingival epithelium for touch and pressure

20
Q

What role do langerhan cells play?

A

Migratory professional antigen presenting cells

21
Q

What are the 4 types of papillae in specialized mucosa on the tongue?

A

Filiform
Fungiform
Foliate
Circumvallate

22
Q

What do von ebner glands do?

A

Produce a serous fluid to wash out crypts

23
Q

Characteristics of filliform papillae

A

Thick keratin
Sharp shape
Most numerous
Provide friction

24
Q

Characteristics of fungiform papillae

A

Mushroom shaped

Non-keratinized

25
Q

Characteristics of foliate papillae

A

Non keratinized
Contain taste buds
Up and down shape like fingers

26
Q

Characteristics of Circumvallate papillae

A

Broad shape
Von ebner glands
Crypts

27
Q

Haptocorrin produced by the salivary glands does what?

A

Binds B12 to protect against stomach acid

28
Q

What are the three major salivary glands?

A

Parotid
Submandibular
Sublingual

29
Q

Which ducts are interlobular?

A

Main excretory and excretory ducts

30
Q

What two caps reside on intralobular duct ends?

A

Serous demilunes

Serous acinus

31
Q

What aids in squeezing spit out?

A

Myoepithelial cells

32
Q

What are the two main intralobular ducts?

A

Intercalated-thinner

Striated-thicker and more eosinophilic

33
Q

Where are interlobular ducts found?

A

In connective tissue. Not in parenchyma

34
Q

What are the two parts of the oral cavity?

A 
Oral cavity (enclosed by dental arches)
Vestibule (external to teeth)
35
Q

Characteristics of the parotid gland

A
  • largest gland(near the ears)
  • purely serous
  • secretes alpha amylase
  • short striated ducts
  • long intercalated ducts
36
Q

Which gland gets infected with the mumps?

A

Parotid gland

37
Q

Characteristics of the submandibular gland

A
  • beneath the floor of the mouth
  • produce 60-70% of saliva
  • both serous and mucous
  • long striated ducts
  • short intercalated ducts
38
Q

Characteristics of the sublingual gland

A
  • Beneath the tongue
  • smallest
  • mucous capped with serous demilunes

Physiology (15 decks)

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