Nose

Question 1

Boundries of the nasal cavity: Roof

Answer 1

caribriorm plate of ethmoid bone

CN1 pass through the cribriform subungual glandsplate

Question 2

Boundaries of Nasal Cavity: Floor

Answer 2

palatine process of maxilla and horizontal plate of palatine bone

Question 3

Boundaries of Nasal Cavity: Medial Wall

Answer 3

formed by perpendicular plate of ethmoid, vomer and septal cartilage

Question 4

3 Regions of Nasal Cavity:

Answer 4

Vestibule (region immediately posterior to nostrils)
Respiratory (lower 2/3 of nasal cavity, warms, moistens, cleans air coming in)
Olfactory: upper 1/3 innervated by olfactory nerves, convey sense of smell

Question 5

Paranasal Sinuses

Answer 5

ethmoid
frontal sinus
maxillary sinus
sphenoidal sinus

Question 6

Ethmoid Sinus

Answer 6

between nasal cavity & orbit

drains into superior and middle nasal meatus

Question 7

Frontal Sinus

Answer 7

in frontal bone

drains into middle nasal meatus

Question 8

Maxillary Sinus

Answer 8

located in maxilla

drains into middle nasal meatus

Question 9

Sphenoidal Sinus

Answer 9

in sphenoid bone

drains into sphenoethmeidal recess (posterior nasal cavity)