noun
pectoralis minor muscle
Anatomical term for the thin, triangular muscle located beneath the pectoralis major.
小胸筋は肩甲骨を前方に引く働きがある。
The pectoralis minor muscle functions to draw the scapula forward.
Refers to the pectoralis major muscle, which is larger and more superficial than the pectoralis minor.
Compound of 小 (small) + 胸筋 (pectoral muscle), a straightforward anatomical naming.