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My Respiratory > Anatomy of Nasal Cavity & Paranasal Sinuses > Flashcards

Anatomy of Nasal Cavity & Paranasal Sinuses Flashcards

1
Q

What is the superior extended part of the alimentary canal called

A

Pharynx

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2
Q

What is the extent of the pharynx

A

Extends from base of the skull to the inferior border of cricoid cartilage (level of the 6th cervical vertebra

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3
Q

What are the three divisions of the pharynx

A

Naso-pharynx
Oro-pharynx
Laryngo-pharynx

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4
Q

What is the approximate length of the pharynx

A

12 to 14cm

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5
Q

What is the approximate width of the pharynx

A

max. 5cm

min. 1.5

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6
Q

What constitutes the bony part of the nose

A

Nasal bone

frontal process of maxilla

nasal notch of frontal bone

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7
Q

What is another name for the lower lateral nasal cartilage

A

alar cartilage

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8
Q

The septum of the nose consists of (bone or cartilage)

A

Cartilage

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9
Q

Which branch of the ophthalmic artery supplies the nose

A

dorsal nasal branch

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10
Q

Which branch of the maxillary artery supplies the nose

A

infra-orbital branch

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11
Q

Which branch of the facial artery supplies the nose

A

alar and septal branches

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12
Q

which branch of the opthalmic nerve supplies the nose

A

External nasal and infra-trochlear branches

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13
Q

Which branch of the maxillary nerve

A

infra orbital

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14
Q

The nose extends from which structure to which structure (anterior to posterior)

A

anterior nares (nostrils) to the posterior aperture (choanae)

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15
Q

What is the choana made up of (bone or cartilage)

A

Bones

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16
Q

Choana is present between which structures

A

vomer (medial pterygoid body of the sphenoid) and the hard palate

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17
Q

Which structure close to the anterior nares is lined by skin and hair

A

vestibule

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18
Q

What are the three divisions of the roof of the nasal cavity

A

Fronto-nasal (anterior)

Ethmoidal (intermediate)

Spenoidal (posterior)

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19
Q

What form the floor of the nasal cavity

A

Hard palate

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20
Q

True or false

the nasal septum is often deflected from median plane

A

True

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21
Q

What are the principal bony parts of the nasal septum

A

Vomer and perpendicular plate of ethmoid bone

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22
Q

Apart from the septal cartilage, which other cartilage can be found in the nasal septum

A

Vomero-nasal organ (organ of Jacobson)

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23
Q

What is the purpose of the nasal conchae and how many are there

A

Humidify air and increase surface area

there are 3

24
Q

what is the space underneath each conchae called

A

A meatus

25
Q

where in the nasal cavity is the naso-lacrimal duct is present

A

anterior of inferior meatus

26
Q

Which structures are present in the middle meatus

A

Bulla ethmoidalis and Hiatus semilunaris

27
Q

The opening of which air sinus is present in the bulla ethmoidalis

A

middle ethmoidal air sinus

28
Q

The opening of which air sinus is present in the hiatus semilunaris (not the anterior part)

A

maxillary air sinus

29
Q

The opening of which air sinus is present in the anterior part of the hiatus semilunaris

A

anterior ethmoidal and frontal air sinus

30
Q

The opening of which air sinus is present in the meatus

A

posterior ethmoidal air sinus

31
Q

Which recess in present above and behind superior concha

A

spheno-ethmoidal recess

32
Q

Which structure contains the opening of the sphenoidal air sinus

A

spheno-ethmoidal recess

33
Q

Which branches of the ophthalmic artery supplies the medial and lateral wall of the nasal cavity

A

anterior and posterior ethmoidal branches

34
Q

Which branches of the maxillary artery supplies the medial and lateral wall of the nasal cavity

A

spheno-palatine and greater palatine branches

35
Q

Which branche of the facial artery supplies the medial and lateral wall of the nasal cavity

A

septal branches of superior labial branch

36
Q

The arterial supply of the medial and lateral wall of the nasal cavity forms a highly vascularized area called what

A

LITTLE’S area of epistaxis (kiesslbach’s plexus)

37
Q

Which nerve provides special sensation for the nasal cavity

A

olfactory nerve

38
Q

Which nerves provide general sensation for the nasal cavity

A

Anterior ethmoidal nerve (V1)

Anterior superior alveolar nerve (V2)

Medial and lateral posterior superior nasal branches from pterygopalatine ganglion (V2)

Nasal branches from greater palatine nerve from pterygopalatine ganglion(V2)

39
Q

Which veins drains the anterior of the nasal cavity

A

Facial vein

40
Q

Which veins drains the posterior of the nasal cavity

A

Retro-pharyngeal and pterygoid venous plexus

41
Q

Which veins drains the roof of the nasal cavity

A

inferior cerebral vein

42
Q

Which lymph nodes drain the front of the nasal cavity

A

submandibular lymph nodes

43
Q

Which lymph nodes drain the posterior of the nasal cavity

A

retropharyngeal and upper deep cervical lymph nodes

44
Q

Which lymph nodes drain the roof of the nasal cavity

A

CSF of sub-arachnoid space

45
Q

What are the four main groups of nasal sinuses

A

frontal, maxillary, sphenoidal and ethmoidal

46
Q

What are the functions of the nasal sinuses

A

Acts as air conditioning chamber.

They act as resonating chambers for production of voice

They make facial bones lighter, and establish contour of face.

47
Q

Which paranasal sinus is the largest

A

maxillary sinus

48
Q

What are the boundaries of the maxillary sinus (apex, base, roof, floor)

A

Apex – zygomatic process

Base - nasal surface of maxilla

Roof – orbital surface of maxilla

Floor - alveolar process of maxilla

49
Q

fracture of which bony structure in the nasal cavity can lead to anosmia and rhinorrhea

A

cribriform plate of the ethmoid bone

50
Q

What is in the anterior wall of the maxillary sinus

A

infra-orbital plexus of vessels and nerves and origin to muscles of upper lip and anterior superior alveolar nerve

51
Q

What is in the posterior wall of the maxillary sinus

A

posterior superior alveolar nerve and vessels.

52
Q

In most cases the cause of a nosebleed (epistaxis) is due to damage to which area of the nasal cavity

A

Kiesselbach area

53
Q

What is the blood supply of the maxillary sinus

A

anterior and posterior alveolar vessels from maxillary artery

54
Q

what is the lymph drainage of the maxillary sinus

A

submandibular nodes

55
Q

What is the nerve supply of the maxillary sinus

A

Anterior ,middle and posterior superior alveolar nerve

56
Q

What does the maxillary sinus communicate with

A

drains into middle meatus through floor of hiatus semilunaris just below the bulla ethmoidalis.

My Respiratory (11 decks)

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