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Gross Anatomy Exam 4 > Nose > Flashcards

Nose Flashcards

1
Q

Bony nasal aperture

A

Rostral opening of the nose

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2
Q

Nostrils aka?

A

Nares

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3
Q

Philtrum

A

Separates nostrils from each other

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4
Q

Apex of nose is what type of epidermis?

A

Thickened cornified epidermis

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5
Q

Glands in apex of nose

A

None in dog

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6
Q

Surface of nasal plane is moistened by?

A

Secretion of lateral nasal gland

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7
Q

What is nasal cartilage?

A

Support of external nose → moveable

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8
Q

5 nasal cartilages

A
  1. Septal c. of nose
  2. Dorsolateral nasal c.
  3. Ventrolateral nasal c.
  4. Lateral accessory nasal c.
  5. Medial accessory nasal c.
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9
Q

Septal c. of nose

A

Perpendicular medial plate separating most of nasal cavity into right and left nasal fossae

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10
Q

Dorsolateral nasal c.

A

Most expansive c. in mobile part of external nose → joins dorsal part of bony nasal aperture caudally

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11
Q

Ventrolateral nasal c.

A

Continuation of rostral lateral half of septal c. → rostrally runs into apex of nose

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12
Q

Lateral accessory nasal c.

A

Supports nostril ventrally

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13
Q

Medial accessory nasal c.

A

Arises from ventral nasal concha and ventrolateral nasal c. → extends rostrally inside alar fold

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14
Q

2 lig. of nose

A
  1. Dorsal nasal lig.

2. Lateral nasal lig.

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15
Q

Which lig. of nose is paired?

A

Lateral nasal lig. (one of each side)

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16
Q

Ligs. of nose run from ___ to?

A

Dorsolateral nasal c. → nasal b. (dorsal or lateral surfaces)

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17
Q

Nasal cavity extends from ___ to ?

A

Nostrils → chonae

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18
Q

Parts of nasal cavity

A
  1. Nasal septum
  2. Nostril
  3. Nasal vestibule
  4. Nasal conchae
  5. Nasal meatuses
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19
Q

3 portions of nasal cavity

A
  1. Osseous portion
  2. Rostral and cd. cartilagenous portions
  3. Membranous portion
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20
Q

Borders of osseous portion of nasal septum

A

Caudally: ethmoid b.

Dorsally: frontal and nasal b.

Ventrally: vomer b.

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21
Q

Which cartilaginous portion of nasal cavity is movable?

A

Rostral

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22
Q

Origin of cd. cartilaginous portion of nasal cavity

A

Ethmoid b.

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23
Q

Nostril is wider ____

A

Dorsomedialy than ventrollateraly

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24
Q

Wing of nostrils contains?

A

Much of dorsolateral and accessory nasal cc.

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25
Most mobile portion of nostril
Wing of nostrils
26
Nasal vestibule is the common opening for the?
1. External nose 2. Nasolacrimal duct 2. Duct of the lateral nasal gland
27
Nasal vestibule houses?
Alar fold
28
What is alar fold?
Rostral extension of ventral nasal concha
29
Nasal conchae
Cartilagenous (or slightly ossified) scrolls covered by nasal mucosa → occupy most of nasal cavity
30
3 nasal conchae
1. Dorsal nasal conhae 2. Ventral nasal conchae 3. Middle (ethmoidal) nasal conchae
31
Dorsal nasal concha originates from?
Ethmoid crest of nasal b.
32
Dorsal nasal concha extends from ? to ?
Cribiform plate → nasal vestibule
33
Dorsal nasal concha is formed by?
First endoturbinate
34
Longest concha in domestic mammals
Dorsal nasal concha
35
Ventral nasal conch originates from?
Conchal crest of maxilla
36
Ventral nasal concha extends from ? to ?
1st premolar tooth → 3rd premolar tooth
37
Ventral nasal concha is arranged in?
Many longitudinal folds which unite rostrally to form alar fold
38
Ethmoidal nasal concha aka?
Middle nasal concha
39
What fills cd. part of nasal cavity?
Ethmoidal (middle) nasal conchae
40
Ethmoid nasal concha is formed by?
Second endotrubinate
41
Ethmoidal nasal choncha is part of?
Ethmoidal labyrinth
42
Endoturbinates fill?
Nasal cavity
43
Ectoturbinates fill?
Frontal sinus
44
Ethmoidal labyinth are outgrowth of?
Ethmoid b. covered with nasal mucosa
45
All ethmoidal labyrinths are attached to?
External lamina and cribiform plate of ethmoid b.
46
The major conchae divide the nasal cavity into what 3 nasal meatuses?
1. Dorsal nasal meatus 2. Middle nasal meatus 3. Ventral nasal meatus
47
Dorsal nasal meatus is the passage between?
Nasal b. (ventral surface) → dorsal nasal concha
48
Dorsal nasal cavity leads directly to?
Fundus of nasal cavity
49
Middle nasal meatus is the passage between?
Dorsal and ventral nasal conchae
50
Middle nasal meatus communicates ith?
Paranasal sinuses
51
Ventral nasal meatus is the passage between?
Ventral nasal conchae → hard palate (dorsal surface)
52
Main pathway for airflow
Ventral nasal meatus
53
Clinical correlation of ventral nasal meatus
1. Nasogastric tube | 2. Endoscope
54
Nasogastric tube and endoscope are both pointed?
Medially and ventrally
55
Ventral nasal meatus leads into?
Nasopharyngeal meatus
56
Nasopharyngeal meatus extends between?
Ventral nasal meatus and chonae
57
Which wall of nasopharyngeal meatus is longer?
Lateral > medial
58
Borders of nasopharyngeal meatus
Dorsal: ethmoid b. (transverse lamina) Lateral: maxilla Medial: vomer Ventral: palatine b. (horizontal lamina)
59
Nasopharyngeal meatus leads into?
Nasopharynx
60
What is the common nasal meatus?
Longtidunal space on either side of nasal septum
61
Common nasal meatus communicates with?
All other nasal meatus
62
What are paranasal sinuses?
Air-filled cavities between external and internal lamina of bb. of skull
63
3 paranasal sinuses
1. Frontal sinus 2. Sphenoid sinus 3. Maxilary recess
64
Frontal sinus is located where?
Rostral 2/3 of frontal b.
65
Compartments of frontal sinus
1. Lateral 2. Medial 3. Rostral
66
Largest compartment of frontal sinus
Lateral
67
Smallest compartment of frontal sinus
Medial
68
The 3 components of the paranasal sinuses do/do not communicate with each other
Do not
69
Each compartment of the paranasal sinus opens separately into?
Nasal cavity via space between 2nd and 3rd ectoturbinates
70
Sphenoid sinus
Larger in cat (very small or not present in dog) → contains part of endoturbinate IV
71
What is a recess?
Something with is not an air-filled cavity between external and internal lamina of skull bb.
72
Borders of maxilla
Lateral: maxilla, lacrimal and palatine bb. Medial: ethmoidal b. (orbital plate)
73
Does size of maxillary recess vary with increasing age of animal?
Does not
74
Nasomaxillary opening is the connection between ? and?
Middle nasal meatus → maxilary recess
75
Nasomaxillary opening is at the level of?
Carnassial tooth

Gross Anatomy Exam 4 (17 decks)

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