Olfactory sac

Japanese: 嗅囊 - きゅうのう
Olfactory sac

… All vertebrates other than those in the above groups have a pair of external nostrils. In sharks and rays, the nostrils are complex-shaped holes that open on the underside of the snout, with a lid called the nasal valve, and behind that is a very large, bowl-shaped cavity called the olfactory sac. The inner surface of this cavity is lined with the olfactory epithelium, which is responsible for the sense of smell. …

*Some of the terminology that mentions the olfactory bladder is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

… 上記のグループ以外の脊椎動物はすべて1対の外鼻孔をもつ。サメ,エイの仲間では鼻孔は吻(ふん)の下面に開く複雑な形の穴で,鼻弁というふたをもち,その奥は嗅囊olfactory sacというひじょうに大きな椀形の空洞になっている。そしてその内面を嗅覚をつかさどる嗅上皮が裏打ちしている。…

※「嗅囊」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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