noun
triceps brachii muscle
Anatomical term for the muscle on the back of the upper arm. Used in medical, fitness, and educational contexts.
上腕三頭筋は腕の後ろ側にある筋肉です。
The triceps brachii is the muscle on the back of the upper arm.
腕立て伏せは上腕
Push-ups are effective for training the triceps brachii.