What regions make up the lower limb?

The lower limb is anatomically divided primarily into the thigh, which is the region between the hip and the knee, and the leg, which is located between the knee and the ankle. This division into thigh and leg is essential for understanding the functional and structural organization of the lower limb. The thigh houses the femur and major muscle groups that facilitate walking and running, while the leg contains the tibia and fibula, which support movement and weight-bearing activities.

In contrast, the other regions mentioned—head and neck, shoulder and arm, and chest and abdomen—relate to different parts of the body that are not classified under the lower limb. These regions include upper body structures that serve distinct roles in mobility and body function, but they do not pertain to the anatomy and function of the lower limb itself.