This is the 16535th most frequent Korean word.
사두근
"사두근" means "quadriceps muscle" in English.
In this sentence, '사두근' is used in the context of anatomy to describe the quadriceps muscle group.
그는 사두근 부상을 입었습니다.
He injured his quadriceps.
Here, '사두근' is used in a fitness and health context, referring to strengthening the muscle group known as quadriceps.
사두근을 강화하는 운동을 추천합니다.
I recommend exercises to strengthen the quadriceps.
The term '사두근' is used to explain its function, thus being presented in a descriptive or educational context about human physiology.