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COM: Neuro (Exam I) > Lecture 14: Histology Of The Oral & Nasal Cavity > Flashcards

Lecture 14: Histology Of The Oral & Nasal Cavity Flashcards

1
Q

What type of lingual papillae are most abundant?

A

Filiform

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2
Q

What type of epithelium is Filiform papillae?

A

Keratinized stratified squamous

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3
Q

What type of epithelium is found in the Fungiform papillae?

A

Nonkeratinized stratified squamous

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4
Q

What type of lingual papillae contains 5 specialized taste buds along apical surface?

A

Fungiform

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5
Q

Where is foliate lingual papillae found?

A

Along lateral margins of base of tongue

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6
Q

What type of epithelium does foliate papillae contain?

A

Stratified squamous epithelium

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7
Q

What types of lingual papillae contain Von Ebner’s glands?

A

Foliate and circumvallate

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8
Q

Ovoid chemoreceptors are found where?

A

Lingual papillae (foliate, Fungiform and circumvallate) Soft palate Post pharynx Epiglottis

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9
Q

What lingual papillae contain ovoid chemoreceptors?

A

Fungiform Foliate Circumvallate

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10
Q

How often are taste receptor cells (buds) replaced?

A

Every 10-14 days

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11
Q

How many different types of taste receptor cells are there?

A

4

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12
Q

At what part of the tongue do you taste sugars?

A

Tip of tongue

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13
Q

What part of the tongue is used to taste salty things?

A

Posterior and lateral to tip of tongue

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14
Q

What parts of the tongue are used for tasting sour things?

A

Anterior 2/3 dorsum, lateral margin of tongue

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15
Q

What parts of the tongue are used for tasting bitter things?

A

Posterior

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16
Q

Taste buds on the palate register primarily what 2 tastes?

A

Bitter and sour

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17
Q

What tastes do the posterior pharynx and epiglottis register?

A

All 5 tastes

18
Q

T/F: Most sensory info that is thought of as taste is actually olfactory sensation subserved by the olfactory mucosa

A

True

19
Q

The nasal cavity is lined by what type of epithelium?

A

Pseudostratified columnar epithelium with goblet cells

20
Q

What 2 cell types are found in the nasal cavity?

A

Mast and plasmacells

21
Q

What does the lamina propria of th enasal cavity complain?

A

Serous and mucous glands to moisten inspired air and trap particulate Extensive vascular plexus (swell or cavernous bodies)

22
Q

What are the functions of the nasal mucosa?

A

Air hydration Add water vapor to inspired air Air filtration

23
Q

What is the purpose of conchae in the nasal mucosa?

A

Interrupt air flow and create turbulence. Particulate matter thrown against conchae and adheres to its moistened surface. Cilia then move mucous/matter into nasopharynx

24
Q

Where does olfactory epithelium exist?

A

Restricted to roof of nasal cavity -> upper surface of superior conchae

25
Q

What 3 cell types does olfactory epithelium contain?

A

Olfactory cells Supporting (sustentacular) cells Basal cells

26
Q

What are olfactory cells?

A

Bipolar sensory neurons that span the thickness ofthe olfactory epithelium Apical dendritic process Basal axonal process

27
Q

What are sustentacular (support) cells of the olfactory epithelium?

A

Columnar cells with oval nuclei Apical microvilli submerged in seromucous flux Light yellow pigment that gives olfactory epithelium its color

28
Q

What is the function of the sustentacular (support) cells of the olfactory epithelium?

A

Provide physical support, nourishment and electrical insulation for the olfactory cells

29
Q

What is the function of basilar cells of the olfactory epithelium?

A

GIves rise to supporting (sustentacular) and olfactory cells

30
Q

Where are basilar cells of the olfactory epithelium found?

A

Contact basal lamina but dont extend to free surface

31
Q

What type of glands are Bowman’s glands and where are they found?

A

Serous exocrine glands found in lamina propria of olfactory epithelium

32
Q

What type of lingual papillae is this?

A

Fungiform (nonkeratinized stratified squamous)

33
Q

What is the arrow pointing at and what type of lingual papillae is this?

A

Arrow is pointing at Von Ebner’s gland and this is foliate papillae

34
Q

Label all 3 and state what type of lingual papillae this is

A

The bottom arrow is a Von Ebner Gland and this is foliate papillae

35
Q

What type of lingual papillae is this?

A
36
Q

What type of lingual papillae is this?

A
37
Q

Label the arrow

A
38
Q

Label all 3

A
39
Q

Lable all 3

A
40
Q

label

A
41
Q

label

A

COM: Neuro (Exam I) (13 decks)

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