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Veterinary Anatomy > Digestive System & Associated Structures > Flashcards

Digestive System & Associated Structures Flashcards

1
Q

What are the 2 main portions of the oral cavity?

A

oral cavity proper
oral vestibule

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2
Q

What is the vestibule?

A

outside the teeth and gums
but inside the lips and cheeks

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3
Q

What are the boundaries of the oral cavity proper?

A

dorsal: hard and rostral-most part of soft palate
rostral/lateral: teeth and gums
ventral: tongue and associated mucosa
caudal: palatoglossal arch

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4
Q

Which boundary of the oral cavity proper has the palatoglossal arch?

A

caudal

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5
Q

What does brachydont mean?

A

short crown

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6
Q

What is the crown? It is covered by _______

A

exposed portion
covered by enamel

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7
Q

What is the root? It is covered by ______

A

below the gumline
covered by cement

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8
Q

What is the neck of the tooth?

A

where the crown and root meet

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9
Q

What is the pulp cavity/root canal?

A

contains the soft tissues of the tooth (sensory & autonomic nerves, vessels, etc)

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10
Q

What part of the tooth narrows with age?

A

the pulp cavity / root canal

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11
Q

What is the apical foramen?

A

narrow opening where the nerves/vessels enter/exit the roots

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12
Q

What is the periodontal ligament?

A

fibrous CT, anchors tooth into the alveolus

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13
Q

Label the diagram 1-7

A

1.crown
2.& 4. root
3.cement
5. pulp cavity / root canal
6. periodontal ligament
7. alveolus
** yellow inside root canal is the apical foramen

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14
Q

What are the outer and inner surfaces of the teeth?

A

outer: vestibular
inner: lingual/palatine

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15
Q

What are the contact surfaces of the teeth?

A

the surfaces which face adjacent teeth in the same dental arch
mesial vs distal

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16
Q

What is the occlusal surface?

A

the surface facing the opposite dental arch

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17
Q

How many total molars are on the top and bottom of the dog?

A

top: 4 (2 each side) molars
bottom: 6 (3 each side) molar

18
Q

How many total premolars and molars does an adult cat have on top and bottom?

A

top: 6 premolars (3 each side), 2 molars (1 each side)
bottom: 2 premolars (4 each side), 2 molars (1 each side)

19
Q

How many premolars does a dog have on each side - top and bottom? Cat?

A

Dog: 4 premolars each side
Cat: 3 premolars each side top, 2 premolars bottom

20
Q

T/F: Deciduous teeth have no molars.

A

TRUE, only incisors, canine, and PREmolars

21
Q

What are carnassials? What number are they?

A

“shearing teeth”
upper premolar 4
lower molar 1

22
Q

How many roots does top premolar 1 of a dog have? Cat?

A

1

23
Q

How many roots does the carnassial teeth have - top and bottom?

A

top: 3 roots
bottom: 2 roots

24
Q

What numbers are missing in the cat triadan system - top and bottom?

A

top: 5
bottom: 5 & 6 (& 10 & 11)

25
Q

Muzzles oppose which muscle(s)?

A

digastricus m.

26
Q

What are the 3 parts of the tongue?

A

apex
body
root

27
Q

What are the mechanical papillae?

A

filiform (body & apex)
conical (root)

28
Q

What are the gustatory papillae?

A

fungiform
vallate
foliate

29
Q

Cats have enlarged, caudally-directed, hook-like ______ papillae

A

filliform

30
Q

Differentiate extrinsic vs intrinsic tongue muscles

A

intrinsic: skeletal muscle entirely within the tongue
- intricate local movement
extrinsic: skeletal muscle, extend from bone TO tongue
- first part of name indicates origin, second part is “glossus”

31
Q

What are the extrinsic muscles of the tongue?

A

genioglossus
hyoglossus
styloglossus

32
Q

What is lyssa?

A

fiber that runs in middle of tongue that detects stretch
- may act as a stretch receptor

33
Q

The ducts of the ____ and ______ salivary glands course within the ______ to empty at the sublingual caruncle

A

mandibular
monostomatic sublingual
sublingual fold

34
Q

Where does the parotid duct cross?

A

lateral surface of masseter muscle to empty into vestibule at caudal margin of superior 4th premolar (upper carnassial)
- then empties into oral cavity

35
Q

Where do zygomatic ducts open?

A

open into the vestibule near the last molar

36
Q

The nasopharynx extends from the _____ to the _____?

A

from the choanae (roof of mouth) to the palatopharyngeal arches

37
Q

What is the oropharynx?

A

from the palatoglossal arches to the base of the epiglottis

38
Q

What is the laryngopharynx?

A

dorsal to the larynx, from the palatopharyngeal arches to the pharyngoesophageal limen

39
Q

What is the passage that is common to both the digestive and respiratory systems?

A

pharynx

40
Q

What are the 3 pharyngeal constrictor mm.?

A

hyopharyngeus m.
thyropharyngeus m.
cricopharyngeus m.

41
Q

Which muscles form the floor of the oral cavity?

A

geniohyoideus m.
mylohyoideus m.

Veterinary Anatomy (12 decks)

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