also: ちょくきん
rectus muscle; rectus
Anatomical term for a straight muscle, often used in compound muscle names like 腹直筋 (rectus abdominis).
The rectus abdominis is a muscle on the front of the abdomen.
The rectus femoris is one of the muscles on the front of the thigh.
Standard kanji form; reading ちょっきん is the most common in medical contexts.
Alternate reading; less common than ちょっきん.
From 直 (straight) + 筋 (muscle). The reading ちょっきん is a contraction of ちょくきん.