THRB.24 Flashcards
Dorsal nasal meatus
Dorsal nasal concha
Middle nasal meatus
Duct of lateral nasal gland
Common nasal meatus
Nasolacrimal duct
Cartilage of nasal septum
Ventral nasal meatus
Vomeronasal organ
Lateral frontal sinus with ectoturbinates
Dorsal nasal cavity
Middle nasal cavity
Ventral nasal cavity
Entrance to the maxillary recess
Alar fold
Basal fold
Ventral nasal concha
Where does the nasal cavity extend?
Nostrils → Lamina cribrosa
Function of nasal conchae
Increase respiratory surface area
Nasal conchae in animals with highly developed olfactory senses…
Are more complex
What is found underlying the mucosa of the nasal cavity?
Vascular plexii
Endoturbinate I
- Longest endoturbinate
- Most dorsal
- Extends furthest into the nasal cavity
- Forms the base of the dorsal nasal conchae
Endoturbinate II
- Forms the bony part of the middle nasal conchae
The bony part of the ventral nasal concha is formed by the…
Maxilla
What is contained in the caudal portion of the nasal cavity
- Ethmoid conchae
- Contains olfactory nerve endings
Composition of conchae
- Basal lamella - Lateral wall of nasal cavity
- Spiral lamella - Formed medially to basal lamina
Give the conchae formation in Ca
Give the conchae formation in Equine
Give the conchae formation in ruminants
Paired duct on the nasal cavity floor
Ductus incisivus
Give the blood supply of the nasal cavity
- Major palatine a.
- Maxillary a. → Sphenopalatine a.
- Caudal nasal a.
- Lateral nasal a.
- Septal nasal a.
Give the innervation of the nasal cavity
- Olfactory n. (CN-I) → Through lamina cribrosa
- Vomeronasal n.
