vibrissa

…For example, the spines in front of the fins of fishes are called paleontology, the horny plates in the mouths of baleen whales are called baleen, the projections on the legs of chelicerates are called pedipalps, and in plants, the ends of vines are called tendrils, and the roots of monocotyledons are called baleen roots. In mammals, the palps commonly called palps are the vibrissae on the upper lip, which are much thicker, longer, and harder than body hair, and the roots of the hairs are loosely fitted into the hair sacs and surrounded by the endings of sensory nerves, so that when the tips of these hairs touch something, they are sensitive to it. Similar palps (sinus hairs), which are less conspicuous, are found above the eyes, on the cheeks, on the chin, and on the throat, and in animals that move through grass and undergrowth, such as mice, rabbits, civets, and cats, their tips form a circle through which the animal can pass. …

*Some of the terminology explanations that mention "vibrissa" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…例えば，魚類のひれの前にある鰭刺（きし）を触鬚（しよくしゆ），ヒゲクジラ類の口内にある角質の板をくじらひげ，鋏角類の脚にある突起物を脚鬚（きやくしゆ）pedipalpというたぐいであり，植物でも，つるの先端を巻きひげ，単子葉類の根をひげ根という。哺乳類で俗にひげと呼ばれるのは，上唇に生える触毛vibrissaで，体毛よりもはるかに太く，長くかつ硬く，毛根が毛囊に緩く収まり，その部を感覚神経の終末が取り巻いているので，この毛の先端が物に触れると，敏感にそれを感知する。同様な触毛(血洞毛)は，あまり目だたないが，目の上，ほお，おとがい，のどにもあり，ネズミ，ウサギ，ジャコウネコ，ネコなど，草やぶをくぐり抜けて活動するものでは，それらの先端は，その動物が通過できる円を形成する。…

※「vibrissa」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