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Veterinary Anatomy III > THRA.3 > Flashcards

THRA.3 Flashcards

1
Q

Give the main constituent bones of the topic: “Bones of the Nasal Cavity”

A
  1. Os palatinum
  2. Os frontale
  3. Os incisivum
  4. Os nasale
  5. Os pterygoideum
  6. Os lacrimalis
  7. Vomer
  8. Os zygomaticum
  9. Os ethmoidale
  10. Maxilla

(FLIP ZEN MVP)

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2
Q

​In the topic: Bones of the Nasal Cavity: Give the main constituent(s) of Os palatinum

A
  1. Sinus palatinus
  2. Margo liber
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3
Q

Sinus palatinus

A
  1. Small in lamina horizontalis in most species
  2. Large in lamina perpendicularis in Eq
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4
Q

Margo liber

A

Attachment of soft palate

Foramen palatinum majus:

  • Rostral to margo liber in most species
  • Caudomedially in Ru
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5
Q

Which structure(s) pass through foramen palatinum majus?

A
  • Canalis palatinus*:
  • A./v./n. palatina major* (ex CN-V2) (To the palatine plexus)
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6
Q

Give the main constituent(s) of os incisivum

A
  1. Foramen interincisiva (Ca)
  2. Canalis interincisiva (Eq)
  3. Fissura interincisiva (Ru/Su)
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7
Q

Foramen/canalis/fissura interincisiva

A

Ca / Eq / Ru+Su respectively

Conducts a. palatina major

Ru: No Incisors, lamina dentalis present instead

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8
Q

​In the topic: Bones of the Nasal Cavity: Give the main constituent(s) of os nasale

A

Incisura nasoincisiva

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9
Q

​In the topic: Bones of the Nasal Cavity: Give the main component(s) of os pterygoideum

A

Hamulus pterygoideus

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10
Q

Hamulus pterygoideus

A

Beyond the margin of the choanae

Well developed in Eq

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11
Q

​In the topic: Bones of the Nasal Cavity: Give the main component(s) of os lacrimalis

A
  1. Facies nasalis
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12
Q

Facies nasalis

A

Forms the border of sinus frontalis and sinus maxillaris

Crossed by the ductus nasolacrimalis from the orbit

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13
Q

Vomer

A

From meatus nasopharyngeus to crista nasalis

Two lateral plates form sulcus septalis, where septum nasi is found

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14
Q

​In the topic: Bones of the Nasal Cavity: Give the main component(s) of os zygomaticum

A

Crista facialis (Eq, ØCa)

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15
Q

Crista facialis

A

Eq, ØCa

From os zygomatica to maxilla

Barely visible in Ru, tuber faciale is instead seen

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16
Q

​In the topic: Bones of the Nasal Cavity: Give the main component(s) of os ethmoidale

A
  1. Labyrinthus ethmoidalis
17
Q

Labyrinthus ethmoidalis

A

From the caudal part of cavum nasi to lamina cribrosa

Highly vascularised and innervated structure

Ethmoturbinate warm, clean and humidify the incoming air

Olfaction

18
Q

Give the component(s) of labyrinthus ethmoidalis

A
  1. Meatus nasi dorsalis (Olfaction)
  2. Meatus nasi medius (Connects paranasal sinuses)
  3. Meatus nasi ventralis (Runs to nasopharynx)
  4. Meatus nasi communis (Connection between the meati)
19
Q

​In the topic: Bones of the Nasal Cavity: Give the main component(s) of maxilla

A
  1. Foramen infraorbitalis
  2. Rugae palatini
20
Q

Foramen infraorbitalis

A

Termination of canalis infraorbitalis

A./v./n. infraorbitalis (ex CN-V2)

21
Q

Rugae palatini

A

Form oral mucosal surface of the palatum durum

22
Q

​In the topic: Bones of the Nasal Cavity: Give the key boney structures

A
  1. Cavum nasi
  2. Palatum durum
  3. Diastema
  4. Ethmoturbinalia
23
Q

Cavum nasi

A

Seperated by septum nasi on the vomer and caudally by the lamina perpendicularis

Ventral border: palatum durum

Lateral border: os incisivum, maxilla, os pterygoideum, os zygomaticum

Caudally bordered by lamina orbitalis of os ethmoidalis

24
Q

Palatum durum

A

Formed by:

  • Lamina horizontalis of os palatinum
  • Processus palatinus of os incisivum and maxilla

Seperates nasal and oral cavities

Supports the palatine plexus

Fissura palatina cross between maxilla and os incisivum

25
Q

Diastema

A

‘margo interalveolaris’

Between premolar region and the incisors

Teeth are seperated by septa interalveolaria

Septa intraalveolaria present within the alveoli

26
Q

Ethmoturbinalia

A

Each possess both a lamina basalis and a lamina spiralis and are split into two rows (3 in Eq)

Ethmoturbinalia are subdivided into long and short ectoturbinalia

Endoturbinate I forms the concha nasalis dorsalis

Endoturbinate II forms concha nasalis media

Concha nasalis ventralis are also called maxiloturbinates

27
Q

Give the numbers of Ethmoturbinalia accross the species

A

Ectoturbinalia: 6 in Ca; 18 in Ru; 20 in Su; 25 in Eq

Endoturbinalia: 4 in Ca; 4 in Ru; 7 in Su; 6 in Eq

Veterinary Anatomy III (124 decks)

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