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Gross II > Nasal Cavity > Flashcards

Nasal Cavity Flashcards

1
Q

Functions of the nasal cavity

A
  1. Provide an airway
  2. Olfaction
  3. Warming and moistening of inspired air
  4. Cleansing of inspired air
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2
Q

Nasal cavity extends from ______ anteriorly, and to _______ posteriorly.

A

Nostrils

Choanae

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3
Q

Nasal cavity divided into left and right chambers by

A

Nasal septum

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4
Q

Chonae

A

Posterior apertures of nasal cavity

Open into nasopharynx

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5
Q

External nose consists of:

A
  1. Tip
  2. Root
  3. Nares
  4. Alae
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6
Q

Roof of nasal cavity formed by

A

Nasal bone
Frontal bone
Cribriform plate of ethmoid
Body of sphenoid

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7
Q

Floor of nasal cavity formed by

A

Palatine process maxilla

Horizontal plate of palatine

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8
Q

What forms hard palate

A

Palatine process of maxilla

Horizontal plate of palatine

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9
Q

Medial wall of nasal cavity

A

Septal cartilage
Perpendicular plate of ethmoid
Vomer

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10
Q

Deviated septum

A

Septum does not lie in median plane

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11
Q

Causes of deviated septum

A

Congenital malformation
Birth injury
Postnatal trauma

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12
Q

Lateral wall of nasal cavity

A 
Nasal bone
Frontal process of maxilla
Lacrimal bone
Ethmoid bone
Inferior nasal concha
Perpendicular plate of palatine
Medial pterygoid plate of sphenoid
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13
Q

Superior nasal concha is from

A

Ethmoid bone

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14
Q

Middle nasal concha is from

A

Ethmoid bone

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15
Q

Inferior nasal concha

A

Own separate bone

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16
Q

Highest nasal concha

A

Anatomical variation of an extra concha above superior nasal concha

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17
Q

Highest nasal concha is from what bone

A

Ethmoid bone

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18
Q

Functions of nasal concha

A
  1. Increase surface area to clean, moisten and warm inspired air
  2. Increase turbulence for olfaction
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19
Q

Sphenoethmoidal recess location

A

Above and behind superior nasal concha

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20
Q

Sphenoethmoidal recess opening

A

Sphenoid sinus

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21
Q

Superior meatus location

A

Below superior nasal concha

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22
Q

Superior meatus opening

A

Posterior ethmoidal cells

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23
Q

Middle meatus location

A

Below middle nasal concha

24
Q

Middle meatus openings

A

Frontal sinus
Maxillary sinus
Middle ethmoidal cells
Anterior ethmoidal cells

25
Ethmoidal bulla
Rounded projection into middle meatus
26
Ethmoidal bulla opening
Middle ethmoidal cells
27
Hiatus semilunaris
Curved slit below ethmoidal bulla
28
Hiatus semilunaris opening
Frontonasal duct Anterior ethmoidal cells Maxillary sinus
29
Inferior meatus location
Below inferior nasal concha
30
Inferior meatus opening
Nasolacrimal duct
31
Nasolacrimal duct
Connects lacrimal sac of orbit to nasal cavity
32
Nasal vestibule
Area just inside each nostril
33
Nasal vestibule contains
Hair Sebaceous glands Sweat glands
34
Respiratory region
Lower 2/3 of nasal cavity
35
Olfactory region
Superior nasal concha and upper 1/3 of nasal septum
36
Olfactory region contains
Olfactory nerve fibers (CN I)
37
Special sensory Innervation of nasal cavity
Olfactory nerve (CN I)
38
General sensory innervation of nasal cavity
Branches of maxillary and ophthalmic divisions of trigeminal
39
Autonomic innervation of nasal cavity
Pterygopalatine ganglion
40
Blood supply to nasal cavity
1. Sphenopalatine branch of maxillary artery | 2. Anterior ethmoidal branch of ophthalmic artery
41
Epistaxis
Nose bleed
42
Two types of epistaxis
1. Mild form | 2. Severe form
43
Mild form of epistaxis
Involved small branches in or near vestible
44
Severe form of epistaxis
Involves spurting arterial blood
45
Lymph nodes of nasal cavity
Drain into deep cervical nodes
46
Paranasal sinuses
Cavities found within bones of face
47
Frontal sinus
Opens into hiatus semilunaris of middle meatus via frontonasal duct
48
Maxillary sinus location
Lateral to nasal cavity and inferior to orbit
49
Maxillary sinus opens into
Hiatus semilunaris within middle meatus
50
Only paranasal sinus that may be present at birth
Maxillary sinus
51
Largest paranasal sinus
Maxillary sinus
52
Sphenoidal sinus
Opens into sphenoethmoidal recess
53
Posterior ethmoidal cells opens into
Superior meatus
54
Middle ethmoidal cells open into
Ethmoidal bulla within middle meatus
55
Anterior ethmoidal cells open into
Hiatus semilunaris in middle meatus
56
Infection of nasopharynx can spread to:
1. Nasopharynx 2. Middle ear 3. Paranasal sinuses 4. Lacrimal apparatus and conjunctiva 5. Anterior cranial fossa 6. Mastoid air cells

Gross II (29 decks)

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