Nasal Cavity and Parts

Question 1

Nasal aperature

Answer 1

bony part of the nasal cavity begins; composed of 2 symmetrical halves; separated by the median nasal septum

Question 2

Chonanae

Answer 2

caudal openings of the two halves of the nasal cavity;

at the caudal end of the nasal septum where the cavity opens into the nasopharynx

Question 3

Dorsal nasal concha

Answer 3

originates as the most dorsal scroll on the cribiform plate and extends rostrally as a shelf attached along the medial surface of the nasal bone

Question 4

Ventral nasal concha

Answer 4

several elongated scrolls that attach to a crest on the medial surface of the maxilla lies in the middle of the nasal cavity but does not come into contact with the median nasal septum

Question 5

Nasal septum

Answer 5

separates the right and left nasal cavities composed of cartilage and bone

cartilage: forms rostral 2/3 of median partition
bony: formed by the perpendicular plate of the ethmoid bone, septal processes of frontal/nasal bones, sagittal portion of the vomer

Question 6

Dorsal nasal meatus

Answer 6

lies between the nasal bone and the dorsal nasal concha

Question 7

Middle nasal meatus

Answer 7

lies between the dorsal nasal concha and the ventral nasal concha

Question 8

Ventral nasal meatus

Answer 8

dorsal to the hard palate; between hard palate and the ventral nasal concha

Question 9

Common nasal meatus

Answer 9

space formed on each side of the nasal septum; extends from the nasal aperature to the choanae in a longitudinal direction and from the nasal bone to the hard palate in a vertical direction