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DHBS 301 > Nasal Cavity and Paranasal Sinuses > Flashcards

Nasal Cavity and Paranasal Sinuses Flashcards

(52 cards)

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1
Q

External nares function

A

Connect nasal cavity to the environment

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2
Q

How is the nose supported?

A
  • Nasal bones
  • Fleshy cartilaginous network
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3
Q

What lines the vestibule of the nose?

A

Hairs called vibrissae

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4
Q

Anterior nasal cavity boundary

A

External nares

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5
Q

Posterior nasal cavity boundary

A

Internal nares

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6
Q

Superior nasal cavity boundary

A
  • Cribriform plate of ethmoid
  • Body of sphenoid
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7
Q

Inferior nasal cavity boundary

A

Superior aspect of the hard palate

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8
Q

Medial nasal cavity boundary

A

Midline nasal septum

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9
Q

Lateral nasal cavity boundary

A

Nail, maxilla, ethmoid, palatine, lacrimal, and conchae

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10
Q

What bones form the hard palate?

A

Maxilla and palatine

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11
Q

The nasal cavity is continuous with the…

A

Nasopharynx through the internal nares

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12
Q

Nasal septum divides…

A

The nasal cavity into left and right portions

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13
Q

What forms the nasal septum?

A
  • Septal cartilage
  • Vomer
  • Perpendicular plate of ethmoid
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14
Q

Boney projections of the lateral nasal wall are called

A

Conchae

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15
Q

Conchae are covered by…

A

Highly vascularized mucosa

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16
Q

Conchae function

A
  • Humidify air
  • Warm air
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17
Q

What bone is the superior concha apart of?

A

Ethmoid

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18
Q

What are meatuses?

A

Spaces inferior and lateral to the conchae

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19
Q

What does the middle meatus have?

A
  • Ethmoidal bull
  • Hiatus semilunaris
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20
Q

Where is the spenoethmoidal recess located?

A

Above superior concha

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21
Q

Where are the ostia located? What are they?

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A
  • Nasal meatuses
  • Openings for communication with paranasal sinuses
22
Q

The middle meatus communicates with which paranasal sinuses?

Study These Flashcards
A

Maxillary sinus, ethmoid sinus, and frontal nasal duct

23
Q

Respiratory mucosa function

Study These Flashcards
A

Warm and humidifies air

24
Q

Olfactory mucosa function

Study These Flashcards
A

Mediates sense of smell

25
What increases the surface area within the nasal cavity?
Concha
26
Do the concha and meatuses speeds up or slows down the flow of air?
Slows down
27
What does the olfactory mucosa contain?
Olfactory receptor neurons that mediate sense of smell
28
Where do bundles of olfactory receptor neuron axons pass through?
Cribiform plate of the ethmoid bone
29
What innervates the nasal cavity?
- CN I - CN V1 - CN V2
30
What part of the nasal cavity does CN V1 innervate for general sensory?
Superior aspect
31
What part of the nasal cavity does CN V2 innervate for general sensory?
Inferior aspect
32
What nerve goes through the incisive canal?
Nasopalatine nerve
33
What does the nasopalatine innervate? Is it sensory or motor?
Sensory innervation of anterior part of hard palate, directly behind maxillary incisors and canines
34
What provides arterial supply to the nasal cavity?
- Ophthalmic artery - Maxillary artery - Facial artery
35
Where is there an anastomosis in the nasal region?
Between the nasopalatine and greater palatine arteries in the incisive canal
36
What does the sphenoethmoidal recess communicate with?
Sphenoid sinus
37
What does the superior meatus communicate with?
Posterior ethmoidal cells
38
What does the inferior meatus communicate with
Nasolacrimal canal
39
What does the middle meatus communicate with?
- Maxillary sinus - Frontal sinus - Ethmoid
40
Paranasal sinuses function
- Decrease weight of skill - Warm and humidify air - Serve as chambers for sound resonance
41
What bone Is the ethmoidal sinus in?
Ethmoid bone
41
What bone is the frontal sinus in?
Frontal bone
42
Where is the hiatus semilunaris located?
Middle nasal concha
43
What structure is the sphenoid sinus located near?
Pituitary gland
44
What is the largest paranasal sinus?
Maxillary sinus
45
What structure is the maxillary sinus near
Maxillary premolars and molars
46
Why is the maxillary sinus hard to drain?
Opening is located near the roof of the sinus
47
What structures communicate to the middle meatus through the hiatus semilunaris?
- Anterior ethmoid cells of ethmoidal sinus - Maxillary sinus - Frontonasal duct of frontal sinus
48
Sinusitis
Infection of sinuses
49
What roots project into the maxillary sinus?
Maxillary molars
50
What mediates sensation to the maxillary teeth?
CN V2
51
Where does CN V2 go through? Is it sensory or motor innervation?
- Maxillary sinus - Sensory

DHBS 301 (21 decks)

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