extensor
🇺🇸
/ɪkˈstensər/
🇬🇧
/ɪkˈstensə(r)/
A muscle that helps straighten or extend a part of the body.
The doctor examined the patient's extensor muscles to check their range of motion.
醫生檢查了病人的伸肌,以檢查他們的運動範圍。