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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. 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. ==Additional images== File:Illu nose nasal cavities.jpg|Nose and nasal cavities File:Gray152.png|Ethmoid bone from the right side. File:Gray196.png|Roof, floor, and lateral wall of left nasal cavity. File:Gray780.png|The sphenopalatine ganglion and its branches. File:Gray859.png|Coronal section of nasal cavities. File:Gray994.png|Sagittal section of nose, mouth, pharynx, and larynx. File:Nasenmuscheln1.JPG|Nasal conchae 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「middle nasal concha」の詳細全文を読む スポンサード リンク
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