Histo of Taste and Olfaction Flashcards

1
Q

What type of epithelium lines the nasal vestibule?

A

Keratinized stratified squamous epithelium

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2
Q

What are the hallmarks of olfactory mucosa?

A

Dramatically thicker than respiratory epithelium (still pseudostratified ciliated columnar)

Lacks goblet cells

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3
Q

What is the function of the olfactory glands?

A

Serous secretions that dissolve odorant molecules

Make up for lack of mucus from goblet cells

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4
Q

What cells have specialized, nonmotile cilia with odorant receptors?

A

Olfactory receptor cells

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5
Q

What layer of mucosa in the oral cavity contains the neurovasculature?

A

Papillary layer of lamina propria

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6
Q

If the submucosal layer is present in the oral cavity, what does it contain?

A

Loose CT, adipose tissue, salivary glands

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7
Q

What epithelium makes up the masticatory mucosa?

A

Keratinized and/or parakeratinized stratified squamous epithelium

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8
Q

What kind of mucosa is found on the hard palate, gingiva, and dorsal surface of the tongue?

A

Masticatory mucosa

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9
Q

What is the purpose of rete ridges and papillae in masticatory mucosa?

A

Allows mucosa to stay firmly adhered to connective tissue beneath it

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10
Q

Where is lining mucosa found?

A

Lips, cheeks, alveolar mucosal surface, floor of mouth, inferior surfaces of the tongue, soft palate

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11
Q

What type of oral mucosa would have a distinct submucosa?

A

Lining mucosa

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12
Q

What type of epithelium makes up lining mucosa?

A

Nonkeratinized stratified squamous, may be parakeratinized in some sections

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13
Q

What are the 3 layers of the epithelium of lining mucosa?

A
  1. Stratum basale
  2. Stratum spinosum
  3. Stratum superficiale
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14
Q

What sense is the oral specialized mucosa associated with?

A

Taste

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15
Q

Where is the oral specialized mucosa located?

A

Dorsal surface of the tongue

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16
Q

What type of oral mucosa contains papillae and taste buds?

A

Oral specialized mucosa

17
Q

What type of epithelium makes up oral specialized mucosa?

A

Keratinized epithelium

18
Q

What lingual papillae do not contain taste buds?

A

Filiform papillae

19
Q

What is the function of the filiform papillae?

A

Move food towards pharynx for swallowing

Give dorsal surface of tongue velvety texture

20
Q

What structure is this?

A

Filiform papillae

21
Q

What structure is this?

A

Foliate Papillae

22
Q

Where are foliate papillae generally found on the tongue?

A

Posterior lateral regions

23
Q

What structure is this?

A

Fungiform Papillae

24
Q

What structure is this?

A

Circumvallate Papillae

25
Q

What type of lingual papillae are few in number, located posteriorly, with hundreds of taste buds?

A

Circumvallate papillae

26
Q

Taste buds are located in what layer in structures that are not part of the tongue?

A

Mucosa (of glossopalatine arch, soft palate, posterior surface of epiglottis, posterior wall of pharynx)

27
Q

What is the role of neuroepithelial cells in the taste buds?

A

Elongated cells extending from basal lamina of epithelium to the taste pore

Synapse with afferent sensory neurons of CN VII, IX, or X

28
Q

What structure is this?

A

Taste bud

29
Q

What sensations do the taste buds on the palate primarily detect?

A

Bitter and sour

30
Q

What structure attaches bone to the cementum of the tooth?

A

Periodontal Ligament

31
Q

What substance holds the enamel rods together?

A

Interprismatic material

32
Q

Where are dentinal tubules found?

A

Radiating from pulp chamber to enamel rods

33
Q

Where would Lines of Retzius be found?

A

In the enamel

34
Q
A
35
Q

What structure is this? What are the structures labelled?

A