Structure-Function.org

Nasal cavity

1. Middle nasal concha (left)^ⅳ
2. Perpendicular plate^ⅳ
3. Anterior nasal spine

1. Nasal bone (right)
2. Inferior nasal concha (left)
3. Vomer
4. Ethmoid bone

Together, Feature-B and Bone-ⅲ comprise the nasal septum that divides the nasal cavity into right and left halves. The slightly coiled Feature-A and Bone-ⅱ act as baffles that slow the velocity of the incoming air, thereby increasing the amount of time for the air to be warmed and humdified as it continues to the nasopharynx.