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Gross Anatomy > Nasal Cavity and Paranasal Sinuses > Flashcards

Nasal Cavity and Paranasal Sinuses Flashcards

1
Q

Framework of upper nose

A

nasal bones and frontal process of maxilla

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2
Q

Framework of lower nose

A

1 septal and 2 major alar cartilages

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3
Q

Connect cartilages to each other

A

Fibrous Tissue

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4
Q

Septal Cartilage

A

forms anterior part of nasal septum

2 lateral processes

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5
Q

Major Alar Cartilage

A

U shaped

form lateral and medial borders of nostrils

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6
Q

Vestibule

A

area immediately above nasal opening

lined with skin contains stiff hairs

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7
Q

Nasal Cavity Functions

A

Olfaction
Conditioning of air
Receive secretions of paranasal air sinuses and nasolacrimal duct

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8
Q

Superior Meatus

A

small orifices in lateral wall cause posterior ethmoidal air cells to open

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9
Q

Ethmoidal Bulla

A

lateral wall of Middle Meatus

elevated by middle ethmoidal air cells

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10
Q

Semilunar Hiatus

A

curved cleft anterior and inferior to ethmoidal bulla

in Middle meatus

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11
Q

Location of Ostium of Maxillary Sinus

A

lower part of semilunar hiatus

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12
Q

Infundibulum

A

part of Middle Meatus

receives openings of anterior ethmoidal air cells and sometimes frontal sinus

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13
Q

Inferior Meatus

A

contains opening of nasolacrimal duct

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14
Q

Sphenoethmoidal Recess

A

Opening of Sphenoidal Sinus

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15
Q

Nasal Mucosa

A

bound to periosteum and perichondrium

in nasal cavity, paranasal sinuses, nasolcarimal duct

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16
Q

Olfactory Mucosa

A

lines roof and lateral wall

contains olfactory receptor cells

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17
Q

Respiratory Mucosa

A

lines floor and medial wall

contains respiratory epithelium

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18
Q

Anterior Ethmoidal Nerve

A

branch of nasociliary nerve (from ophthalmic n)
passes through ethmoidal foramen
splits into internal and external nasal branches

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19
Q

Internal Nasal Branch

A

from Anterior Ethmoidal N

supplies mucosa of ant part of septum and lateral wall

20
Q

External Nasal Branch

A

from Anterior Ethmoidal N

supplies skin of lower part of nose

21
Q

Nasal Branch of Infraorbital Nerve

A

inn skin of vestibule

22
Q

Nasal Branch of Anterior Superior Alveolar Nerve

A

inn mucosa of ant part of inferior meatus

23
Q

Posterolateral Nasal Branches

A

from pterygopalatine ganglion or greater palatine n

inn mucosa of post part of lateral wall

24
Q

Nasopalatine Nerve

A

inn mucosa of posterior part of nasal septum

25
Q

Olfactory Receptor Cells

A

bipolar neurons

in olfactory mucosa

26
Q

Peripheral Processes (Dendrites)

A

reach mucosal surface and give rise to nonmotile cilia

27
Q

Central Processes (Axons)

A

join to form olfactory nerves
pass through cribiform plate
end in olfactory bulb

28
Q

Sphenopalatine Artery

A

terminal branch of maxillary artery

supplies posterior parts of lateral wall and septum

29
Q

Anterior Ethmoidal Artery

A

branch of ophthalmic artery

supplies anterior parts of lateral wall and septum

30
Q

Kiesselbach’s Area

A

Common place for nosebleeds

where sphenopalatine, greater palatine, anterior ethmoidal, superior labial aa fuse

31
Q

Paranasal Sinuses

A

air spaces in frontal, maxilla, ethmoid, sphenoid bones

lined by mucous membrane

32
Q

Paranasal Sinus Function

A

resonating chambers for voice

lighten skull bones

33
Q

Maxillary Sinus

A

largest
in body of maxilla
base toward nasal cavity (medial), apex toward zygomatic bone (lateral)

34
Q

Nerve supply to Maxillary Sinus

A

Superior Alveolar Nerves (V2)

35
Q

Blood Supply to Maxillary Sinus

A

Superior Alveolar Arteries (branch of maxillary/ infraorbital aa)

36
Q

Frontal Sinuses

A

in frontal sinuses

open into middle nasal meatus

37
Q

Nerve Supply to Frontal Sinus

A

supraorbital nerve (branch of frontal n, from V1)

38
Q

Blood Supply to Frontal Sinus

A

Supraorbital Artery (branch of ophthalmic a)

39
Q

Ethmoidal Air Cells

A

3-18

Anterior, Middle, Posterior

40
Q

Anterior Ethmoidal Air Cells

A

open into infundibulum of middle nasal meatus

41
Q

Middle Ethmoidal Air Cells

A

open to ethmoidal bulla of middle nasal meatus

42
Q

Posterior Ethmoidal Air Cells

A

open into superior nasal meatus

43
Q

Nerve Supply to Ethmoidal Air Cells

A

anterior and posterior ethmoidal nerves (branches of nasociliary n, V1)

44
Q

Blood Supply to Ethmoidal Air Cells

A

Anterior and Posterior Ethmoidal AA (branches of ophthalmic a)

45
Q

Sphenoidal Sinuses

A

in body of sphenoid
superior to pituitary and optic chiasm, lateral to cavernous sinus and internal carotid
open into sphenoethmoidal recess

46
Q

Nerve Supply to Sphenoidal Sinuses

A

Posterior Ethmoidal N, Pharyngeal N

47
Q

Blood Supply to Sphenoidal Sinuses

A

Posterior Ethmoidal A

Pharyngeal Branch of Maxillary A

Gross Anatomy (30 decks)

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