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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
Q

Ethmoidal bulla

A

Rounded projection into middle meatus

26
Q

Ethmoidal bulla opening

A

Middle ethmoidal cells

27
Q

Hiatus semilunaris

A

Curved slit below ethmoidal bulla

28
Q

Hiatus semilunaris opening

A

Frontonasal duct
Anterior ethmoidal cells
Maxillary sinus

29
Q

Inferior meatus location

A

Below inferior nasal concha

30
Q

Inferior meatus opening

A

Nasolacrimal duct

31
Q

Nasolacrimal duct

A

Connects lacrimal sac of orbit to nasal cavity

32
Q

Nasal vestibule

A

Area just inside each nostril

33
Q

Nasal vestibule contains

A

Hair
Sebaceous glands
Sweat glands

34
Q

Respiratory region

A

Lower 2/3 of nasal cavity

35
Q

Olfactory region

A

Superior nasal concha and upper 1/3 of nasal septum

36
Q

Olfactory region contains

A

Olfactory nerve fibers (CN I)

37
Q

Special sensory Innervation of nasal cavity

A

Olfactory nerve (CN I)

38
Q

General sensory innervation of nasal cavity

A

Branches of maxillary and ophthalmic divisions of trigeminal

39
Q

Autonomic innervation of nasal cavity

A

Pterygopalatine ganglion

40
Q

Blood supply to nasal cavity

A
  1. Sphenopalatine branch of maxillary artery

2. Anterior ethmoidal branch of ophthalmic artery

41
Q

Epistaxis

A

Nose bleed

42
Q

Two types of epistaxis

A
  1. Mild form

2. Severe form

43
Q

Mild form of epistaxis

A

Involved small branches in or near vestible

44
Q

Severe form of epistaxis

A

Involves spurting arterial blood

45
Q

Lymph nodes of nasal cavity

A

Drain into deep cervical nodes

46
Q

Paranasal sinuses

A

Cavities found within bones of face

47
Q

Frontal sinus

A

Opens into hiatus semilunaris of middle meatus via frontonasal duct

48
Q

Maxillary sinus location

A

Lateral to nasal cavity and inferior to orbit

49
Q

Maxillary sinus opens into

A

Hiatus semilunaris within middle meatus

50
Q

Only paranasal sinus that may be present at birth

A

Maxillary sinus

51
Q

Largest paranasal sinus

A

Maxillary sinus

52
Q

Sphenoidal sinus

A

Opens into sphenoethmoidal recess

53
Q

Posterior ethmoidal cells opens into

A

Superior meatus

54
Q

Middle ethmoidal cells open into

A

Ethmoidal bulla within middle meatus

55
Q

Anterior ethmoidal cells open into

A

Hiatus semilunaris in middle meatus

56
Q

Infection of nasopharynx can spread to:

A
  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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