Anatomy Flashcards
(64 cards)
Why cant you use anaesthetics containing adrenaline near nasal cartilage? (hyaline)
Adrenaline causes vasoconstriction which stops the cartilage receiving nutrients
What makes up the roof of the nasal cavity?
Cribriform plate and crista galli.
What makes up the lateral wall of the nasal cavity?
Superior and middle conchae
What makes up the septum?
Perpendicular plate of ethmoid + vomer
What are the 3 types of mucosa in the nose?
- Keratinised stratified squamous epithelium
- Respiratory epithelium
- Olfactory mucosa
What nerve supplies the anterosuperior nose?
Ophthalmic V1 from trigeminal nerve
What nerve supplies the posterioinferior nose?
Maxillary V2 from trigeminal nerve
Which facial blood supply comes from the internal carotid arteries?
Ophthalmic
What facial blood supplies come from the external carotid arteries?
Facial and Maxillary
What is Kiesselbach’s area?
An arterial anastomosis on the nasal septum
What is a meatus?
a space beneath each conchae
What sinuses are present?
- 2 frontal separated by bony septum
- 2 maxillae (antra)
- 2 ethmoid air cells
- 2 Sphenoidal sinuses
How does mucous drain into nasal cavities?
Via ostia in lateral walls of nasal cavities
Where does the frontal sinus drain into?
Middle meatus
Where does the ethmoidal cells drain into?
Superior and middle meatuses
Where does the sphenoidal sinus drain into?
Sphenoethmoidal recess
Where does the maxillary sinus drain into?
Middle meatus
Where does lacrimal fluid drain into?
Nasolacrimal duct
Where does the nasolacrimal duct drain into?
Inferior meatus of nasal cavity
Where can sinusitis pain be referred to?
Teeth
What can extraction of a tooth result in?
oro-antral fistula
What are the muscles of the mouth floor?
mylohyoid
geniohyoid
anterior belly of digastric
What surface of the tongue is the anterior (ventral)
The bottom
Top is dorsal
what vein is in the tongue?
Lingual vein
