…When the proboscis sheath that encloses the snout cavity contracts, the pressure of the body fluids causes the blind tube to invert and extend like a string, which functions to capture food by adhering to prey or injecting venom. In vertebrates, the snout is called the snout, but this refers loosely to the area from just in front of the eyes to the front end of the head. The character for snout originally means the mouth, so the mouth cleft and lips can be considered part of the snout, but the lower jaw is usually not included. … *Some of the terminology that mentions "snout" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…吻体腔を包む吻鞘(ふんしよう)が収縮すると体液の圧力で盲管が反転してひも状に伸び出し,餌生物に粘着したり毒液を注入したりして食物を捕らえる働きをする。 脊椎動物では〈鼻づらsnout〉のことを〈吻〉と呼ぶが,これは両眼の直前付近から頭部の前端までの領域を漠然と指す。もともと〈吻〉の字は〈くちさき〉を意味するから,口裂や唇は吻の一部とみてもよいが,下顎はふつうこれに含まれない。… ※「snout」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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