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Organology > Mouth Lecture > Flashcards

Mouth Lecture Flashcards

1
Q

Boundaries of the vestibule of the mouth

A

Rostral: lips
Lateral: cheeks
Internal: teeth/gums

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2
Q

Boundaries of the oral cavity proper

A

Rostral: Teeth
Ventral”Tongue
Dorsal: palate

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3
Q

Mucosa lining surface of oral cavity

A

Stratified squamous epithelium

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4
Q

Submucosa made of nouth

A

DICT. Type I collagen w/elastic fibers

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5
Q

Salivary glands in mouth

A

Mucuous
Serous
Seromucous

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6
Q

Muscle fxn of tongue

A

Intrinsic muscles: change shape of tongue

Extrinsic: Move tongue

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7
Q

Rostral 2/3 of tongue

A

Apex and body

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8
Q

Caudal 1/3 of tongue

A

Root

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9
Q

5 main types of papillae of tongue

A 
Conical
Filiform
Fungiform
Foliate
Vallate
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10
Q

Accessory papillae of tongue

A

Lentricular (ruminants)

Marginal (temporary)

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11
Q

Papillae w/o taste buds

A

Conical
Filiform
Lentricular
Marginal

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12
Q

Papillae w/taste buds

A

Foliate
Fungiform
Vallate

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13
Q

Conical papillar

  • Where
  • Describe
A

Caudal 1/3 of tongue

Lacks taste buds
Large, pointed apex,
Keratinized
CT core

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14
Q

What papillae is absent in horses

A

Conical papillae

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15
Q

Filiform papillae

  • where
  • describe
A

Rostral 2/3 of tongue

Highly keratinized in cat/cow “sandpaper”
CT core
Sharply pointed apex

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16
Q

Horse filiform papillae

A

Lacks CT core and only str sq epithelium

17
Q

Foliate papillae

  • Where
  • Describe
A

Dorsolateral surface of caudal pt of tongue

Leaf-like projections
Submucosal serous glands open into crypts
Taste buds may degenerate in infancy

18
Q

Foliate papillae in cows and cats

A

Cows lack

Cats have but w/o taste bud

19
Q

Fungiform papillae

  • where
  • describe
A

rostral 2/3

Taste buds
Mushroom shape with THIN stalk

20
Q

Vallate papillae

  • where
  • describe
A

jxn btw rostral 2/3 and caudal 1/3 on lateral wall

Taste buds
Large/round stalk thats thck
Submucosal serous glands open into base of sulcus

21
Q

Marginal papillae

  • Where
  • Fxn
A

On lateral margins of neonatal carnviores/pigs to help nursing. Regress over time

22
Q

Lentricular papillae

  • Where
  • Describe
A

In ruminants/humans

Lens-shaped on torus linguae

23
Q

Types of cells in taste buds

A 
Dark cells (I)
Light cells (II)
Intermediate cells (III)
Basal cells/stem cells (IV)
24
Q

What cells help in taste discernment

A

1-3
Innervated by CN 7, 9, 10

microvilli project into taste pore

25
Q

Whats cleans taste buds

A

Secretions from von Ebner’s glands

26
Q

Avg lifespan of taste bud

A

10 days

27
Q

T/F There is muscularis mucosae in lamina propia of the mouth

A

F

28
Q

T/F Tongue is covered in cutaneous mucous membrane

A

T

Organology (13 decks)

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