Anatomy 1 Flashcards

1
Q

Lateral wall of the nasal cavity

A

Orbital plate of the ethmoid bone
Ethmoidal air cells
Superior and middle conchae

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2
Q

Bony part of the septum (medial wall)

A

Perpendicular plate of the ethmoid

Vomer

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3
Q

Roof of nasal cavities

A

Nasal bones and
Cribriform plate of the ethmoid
(incl. crista galli of ethmoid)

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4
Q

How could an infection spread from the nasal cavity and paranasal sinuses into the anterior cranial fossa?

A

Le fort II and III fractures

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5
Q

How does the hyaline cartilage in the nose get nutrients?

A

Diffusion from the nasal mucosa

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6
Q

Opthalmic artery is a branch of which artery

A

Internal carotid

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7
Q

Maxillary artery is a branch of which artery?

A

External carotid artery

maxillary artery supplies the ace from its deep aspect

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8
Q

The facial artery is a branch of which artery?

A

External carotid

-supplies the face superficially

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9
Q

Superficial and deep blood supply to the face?

A

Superficially –> facial artery

Deep –> maxillary artery

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10
Q

What forms the floor of the nasal cavity?

A

The R&L maxillae and the palatine bones

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11
Q

What forms the nasal septum?

A

The perpendicular plate of the ethmoid and the vomer and the septal cartilage

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12
Q

Pseudostratified columnar with cilia and goblet cells

A

Respiratory epithelium - mainly lines the cavities

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13
Q

Where does mucus from the sphenoidal sinus drain into?

A

The sphenoethmoidal recess

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14
Q

Ethmoidal cells drain mucus into

A

Superior and middle meatuses

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15
Q

Frontal sinus drains mucus into

A

The middle meatus

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16
Q

Antrum mucous drains into

A

Middle meatus

17
Q

Where is the opening of the nasolacrimal duct? and what drains into here?

A

Inferior meatus

-tears drain here

18
Q

Sensory supply to the paranasal sinuses?

A

V1 and V2

  • makes sinusitis painful
  • pain might be referred to the teeth mimicking toothache (apex of a rot can protrude through the maxillary alveolar bone)
19
Q

Why is there a predisposition to maxillary sinusitis?

A

Antral mucosa has to drain superiorly into
If you get sinusitis, mucosa swells, ostia become narrowed anyway,
The whole thing is just more tricky

20
Q

CNV supplies what?

A

Maxilla/mandible
Antral mucosa
All the teeth

21
Q

Which nerve supplies all the teeth?

A

CNV

22
Q

A dental abscess could be spread where?

A

The antrum

-this may cause sinusitis

23
Q

The extraction of a tooth may result in what?

A

Oro-antral fistula

24
Q

Treatment for an oro-antral fistula

A

Closed by surgery