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anatomy > exam 4 mouth/development of the mouth > Flashcards

exam 4 mouth/development of the mouth Flashcards

1
Q

parotid lymphocenter drains? palpable in?

A

dorsal head, orbit, masticatory mm. into tracheal duct
palpable in K9

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2
Q

mandibular lymphocenter drains? palpable?

A

ventral head, nasal and oral cavities into tracheal duct
palpable in K9 & EQ

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3
Q

retropharyngeal lymphocenter drains? palpable in?

A

deep structures of head into tracheal duct
palpable maybe in OX

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4
Q

cat dental formula

A

3131
3121

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5
Q

dog dental formula

A

3142
3143

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6
Q

horse dental formula

A

313(4)3
3133

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7
Q

ox dental formula

A

0033
3133

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8
Q

pig dental formula

A

3143
3143

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9
Q

how is the oral cavity developed/separated from nasal cavity

A

divided from nasal cavity by the medial and lateral palatine processes

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10
Q

how are teeth formed? identify by naming the precursor cells and what derives from them

A
  1. dental lamina forms dental bud which expands and forms cup shaped enamel organs
  2. neural crest mesenchyme forms dental papilla
  3. neural crest cells differentiate into odontoblasts –> dentin
  4. inner layer of enamel organs –> ameloblasts –> enamel
  5. mesenchyme surrounding tooth –> dental sac –> cementoblasts –> cementum
  6. osteoblasts –> bone of dental alveoli
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11
Q
A

enamel hypoplasia “distemper teeth”: defect in enamel and can be caused by any insult that perturbs the ameloblasts’ production of enamel

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12
Q

anodontia

A

complete lack of teeth
congenital absence of teeth

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13
Q
A

supernumerary teeth: anomalous formation of extra dental buds

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14
Q
A

heterotopic polydontia / ear teeth

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15
Q

what creates the thyroglossal duct as the tissue near the tongue migrates

A

thyroid diverticulum

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16
Q

what are the cysts at the root of tongue/epiglottic region due to?

A

SUBLINGUAL ECTOPIC THYROID
persistent segments of teh thyroglossal duct

17
Q

gustatory taste buds

A

fungiform
vallate

18
Q

most numerous taste buds?

A

filiform

19
Q

what taste buds are modified/keratinized in cats

A

filliform

20
Q

what is the pharyngeal ring?

A

ring of tonsillar tissue in the pharynx, provide immune defense by protecting areas exposed to external environment

21
Q

carnassial teeth in dogs/cats and their root formulae

A

upper fourth PM - 3 roots
lower first M - 2 roots

22
Q

equine cheek teeth associated with maxillary sinuses

A

rostral = 108,109, 208, 209
caudal = 110, 111, 210, 211

23
Q

wolf teeth in horses

A

upper first premolar (105,205)

24
Q

missing cat teeth

A

105,205,305,405 and 306 and 406

25
Q

dog decid

A

313
313

26
Q

components of periodontium

A

cementum
periodontal lig.
alevolar bone
surrounding gingiva

anatomy (16 decks)

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