Anatomy 1 Flashcards
Lateral wall of the nasal cavity
Orbital plate of the ethmoid bone
Ethmoidal air cells
Superior and middle conchae
Bony part of the septum (medial wall)
Perpendicular plate of the ethmoid
Vomer
Roof of nasal cavities
Nasal bones and
Cribriform plate of the ethmoid
(incl. crista galli of ethmoid)
How could an infection spread from the nasal cavity and paranasal sinuses into the anterior cranial fossa?
Le fort II and III fractures
How does the hyaline cartilage in the nose get nutrients?
Diffusion from the nasal mucosa
Opthalmic artery is a branch of which artery
Internal carotid
Maxillary artery is a branch of which artery?
External carotid artery
maxillary artery supplies the ace from its deep aspect
The facial artery is a branch of which artery?
External carotid
-supplies the face superficially
Superficial and deep blood supply to the face?
Superficially –> facial artery
Deep –> maxillary artery
What forms the floor of the nasal cavity?
The R&L maxillae and the palatine bones
What forms the nasal septum?
The perpendicular plate of the ethmoid and the vomer and the septal cartilage
Pseudostratified columnar with cilia and goblet cells
Respiratory epithelium - mainly lines the cavities
Where does mucus from the sphenoidal sinus drain into?
The sphenoethmoidal recess
Ethmoidal cells drain mucus into
Superior and middle meatuses
Frontal sinus drains mucus into
The middle meatus
Antrum mucous drains into
Middle meatus
Where is the opening of the nasolacrimal duct? and what drains into here?
Inferior meatus
-tears drain here
Sensory supply to the paranasal sinuses?
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)
Why is there a predisposition to maxillary sinusitis?
Antral mucosa has to drain superiorly into
If you get sinusitis, mucosa swells, ostia become narrowed anyway,
The whole thing is just more tricky
CNV supplies what?
Maxilla/mandible
Antral mucosa
All the teeth
Which nerve supplies all the teeth?
CNV
A dental abscess could be spread where?
The antrum
-this may cause sinusitis
The extraction of a tooth may result in what?
Oro-antral fistula
Treatment for an oro-antral fistula
Closed by surgery
