…The border with the outer orbit is very thin, so it is called a paper-like plate. The frontal sinus (sinus frontalis) is located in the frontal bone that forms the area from the forehead to the eyebrows. Since it originates from the anterior ethmoid sinus, its development is often inhibited by inflammation during childhood, and it has the highest rate of underdevelopment of all paranasal sinuses. Underdevelopment of both frontal sinuses is seen in 5% of people. … *Some of the terminology explanations that mention "sinus frontalis" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…外側にあたる眼窩との境界は非常に薄いため紙様板と呼ばれる。前頭洞sinus frontalisは額からまゆ毛のあたりを構成する前頭骨内にあり,前部篩骨洞から発生してくるために,幼少時の炎症などによって発育が阻害されることが多く,全副鼻腔中,発育不全の率が最も高い。両側の前頭洞の発育不全は5%の人にみられる。… ※「sinus frontalis」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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