THRB.25 Flashcards
Nasomaxillary aperture
Dorsal conchal sinus
Frontal sinus
(Conchofrontal sinus)
Sphenopalatine sinus
Caudal maxillary sinus
Septum of the maxillary sinus
(Divides maxillary sinus in Eq only)
Ventral conchal sinus
Rostral maxillary sinus
List paired the maxillary sinuses of domestic animals
- Maxillary
- Frontal
- Palatine
- Sphenoidal
- Lacrimal (Ru/Su)
- Dorsal conchal (Eq/Ru/Su)
- Ventral conchal (Eq/Ru/Su)
- Cellulae ethmoidales (Ru/Su)
Location of the maxillary sinus
Within the caudal part of the maxilla
Which canal projects into the maxillary sinus?
Infraorbital canal
Nasomaxillary aperture is found between…
- Middle nasal meatus
- Maxillary sinus
Caudal maxillary sinus communicates with…
All sinuses
(except the rostral maxillary sinus in Eq)
The maxillary sinus in carnivores is known as…
Maxillary recess
(because it is more of a diverticulum than a sinus)
Location of the frontal sinus
Within the frontal bone
The frontal sinus communicates with…
- Middle nasal meatus
The continuation of the frontal sinus to the dorsal conchal sinus in Eq…
Conchofrontal sinus
The frontomaxillary opening is between…
- Caudal maxillary sinus
- Conchofrontal sinus
Which species have a multi-compartmented frontal sinus?
Bo/Su
The frontal sinus of ruminants extends…
Into the cornual process
Which species possess a sphenopalatine sinus?
Equine
(Combination of sphenoid and palatine sinuses)
Sphenopalatine sinus communicates with…
What is found just dorsal to the sphenoid sinus?
Optic chiasma
(Sinusitis can spread to the optic nerve here)
Function of paranasal sinuses
- Increasing muscle attachment area without increasing weight
- Provide thermal + mechanical protection to:
- Orbit
- Nasal cavity
- Cranial cavities
