: Used for bending the knee and extending the hip.

: Protects the knee joint and helps it extend.

Training your legs is crucial for injury prevention and overall metabolic health. A Guide to Your Leg Muscles, from the Ground Up - HSS

The leg is a complex structure of bones and muscles designed to support body weight and enable movement like walking, running, and jumping. :

: The longest and strongest bone in the body, connecting the hip to the knee.