立りつ毛もう筋きん

noun

arrector pili muscle

Anatomical term for the tiny smooth muscle attached to a hair follicle; contraction causes goosebumps. The Latin plural form 'erectores pilorum' is also used in medical contexts.

• 寒さむさや恐きょう怖ふで立りつ毛もう筋きんが収しゅう縮しゅくし、鳥とり肌はだが立たつ。

  When it's cold or you feel fear, the arrector pili muscles contract and you get goosebumps.