middle nasal concha

{{Infobox bone

| Name = Middle nasal concha

| Latin = concha media

| Image = Gray151.png

| Caption = Ethmoid bone from behind.

| Image2 = Conchanasalismedius.PNG

| Caption2 = Lateral wall of nasal cavity, showing ethmoid bone in position. (Middle nasal concha is at bottom of pink region.)

}}

The medial surface of the labyrinth of ethmoid consists of a thin lamella, which descends from the under surface of the cribriform plate, and ends below in a free, convoluted margin, the middle nasal concha (middle nasal turbinate).

It is rough, and marked above by numerous grooves, directed nearly vertically downward from the cribriform plate; they lodge branches of the olfactory nerves, which are distributed to the mucous membrane covering the superior nasal concha.

The middle turbinates insert anteriorly into the frontal process of the maxilla and posteriorly into the perpendicular plate of the palatine bone.{{Cite journal |last1=Lee |first1=Hye Yeon |last2=Kim |first2=Chang-Hoon |last3=Kim |first3=Jin Young |last4=Kim |first4=Jin Kook |last5=Song |first5=Mee Hyun |last6=Yang |first6=Hee Jun |last7=Kim |first7=Kyung-Su |last8=Chung |first8=In Hyunk |last9=Lee |first9=Jeung-Gweon |last10=Yoon |first10=Joo-Heon |date=September 2006 |title=Surgical anatomy of the middle turbinate |url=https://pubmed.ncbi.nlm.nih.gov/16258979/ |journal=Clinical Anatomy |volume=19 |issue=6 |pages=493–496 |doi=10.1002/ca.20202 |issn=0897-3806 |pmid=16258979|s2cid=5720770 }} There are three mutually perpendicular segments of the middle turbinate: from proximal to distal, there is the horizontal segment (axial plane), the basal lamella (coronal plane), and the vertical segment (sagittal plane).