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Anatomy U6 > Nose and Paranasal sinuses > Flashcards

Nose and Paranasal sinuses Flashcards

1
Q

1st part of upper respiratory tract

A

Warms
humidifies
filters

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2
Q

Olfactory region

A

Confined to the superior portion of the nasal cavity

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3
Q

Blood supply to nose

A

Opthalmic artery
Maxillary artery- supply skin
Facial artery branches- supply skin of the ala and lower part of the nasal septum

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4
Q

Innervation to nose

A

V1 (external branch of the anterior ethmoid nerve)- superior aspect of the nose to tip
V2(infraorbital nerve)- inferior and lateral aspects of the nose, nares, up to the lower eyelids

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5
Q

Roof of nasal cavity

A

Cribriform plate of ethmoid bone

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6
Q

Floor of nasal cavity

A

Superior surface of the hard palate

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7
Q

medial wall of nasal cavity

A

Osteocartilaginous septum

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8
Q

Posterior limit of nasal cavity

A

Perpendicular plate of ethmoid bone and vomer

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9
Q

Lateral wall of nasal cavity

A

Superior/middle turbinates- ethmoid bone
inferior turbinates- maxilla
perpendicular plate- palatine bone

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10
Q

Inferior meatus

A

Nasolacrimal duct

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11
Q

Middle meatus

A

Maxillary sinus–> via semilunar hiatus
Frontal sinus–> via frontonasal duct- anterior ethmoidal cells drain into frontonasal duct
Middle ethmoidal cells

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12
Q

Superior meatus

A

Posterior ethmoidal cells

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13
Q

Sphenoid sinus drains

A

onto posterior roof of nasal cavity

-sphenoethmoidal recess

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14
Q

Terminal branch of maxillary artery

-most of blood supply to nasal cavity

A

Sphenopalatine artery

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15
Q

Supplied by sphenopalatine artery

-posterior lateral nasal branch

A

nasopalatine artery

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16
Q

Length of hard palate

-supplies anterior portion of nasal septum

A

Greater palatine artery

17
Q

Supplies superior portion of the nose

A

anterior and posterior ethmoidal arteries from opthalmic artery

18
Q

Vestibule blood supply

A

Superior labial artery from facial artery

19
Q

Branches from both internal and external carotid arteries

A

Kiesselbach’s area

20
Q

Entirely sensory

A

Maxillary nerve V2

associated with pterygopalatine ganglion

21
Q

What nerve supplies lateral wall

A

anterior ethmoidal nerve- branch of V1

and some of V2

22
Q

What nerve supplies the medial wall

A

nasopalatine nerve- V2

and branches of anterior ethmoidal nerve- V1

23
Q

Pterygopalatine ganglion

A

Parasympathetic- preganglionic fibers- associated with maxillary V2- secretomotor

Greater petrosal nerve- branch of facial

24
Q

Drain into the sphenoethmoidal recess

A

Sphenoid sinuses

25
Q

Drain into the anterior portion of the middle meatus

A

Frontal sinues- frontonasal duct

26
Q

Drains into the frontonasal duct

A

Anterior ethmoid sinus

27
Q

Drains into the middle meatus

A

middle group of ethmoid sinus

28
Q

Drains into the superior meatus

A

Posterior group of ethmoid sinus

29
Q

drains into the middle meatus via hiatus semilunaris

A

Maxillary sinus

30
Q

Nasal bone fractures

A

May result in fracture of cribriform plate of ethmoid bone

-CSF rhinorrhea- leakage of CSF fluid into nose

31
Q

Nasal foreign body

A

Most common regions- anterior to middle turbinate/below the inferior turbinate
R sided are 2x as common

Rhinoliths- if left for long period of time

32
Q

Epistaxis

A

Nose bleed
-Mucosa is eroded and the vessels become exposed and break

90% of bleeds- occur anteriorly from kiesselbach’s plexus

Posterior bleeds- involve branches of the sphenopalatine artery- greater risk of airway compromise

33
Q

Paranasal sinusitis

A

condition caused by congestion of infection within a sinus

34
Q

Trigeminal neuralgia

A

Condition associated with excruciating pain that radiates over the dermatome of the maxillary nerve- tic douloureux

causes- compression of CN V/ demyelination of parent nerve trunk or its branches

35
Q

What artery is the major source of blood supply to the nose and which foramen does it enter the nasal cavity

A

Sphenopalatine artery

SPhenopalatine foramen

36
Q

Five arteries that anastomose on the nasal septum making up kiesselbach’s area

A 
anterior ethmoidal artery
posterior ethmoidal artery
nasopalatine artery
greater palatine artery
superior labial artery
  • point where branches from both internal and external carotid arteries converge
37
Q

The deep petrosal nerve is composed of what fibers

A

Postganglionic sympathetics

Anatomy U6 (4 decks)

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