What would be your first thought if I say Biceps Femoris and Triceps Surae? you would probably think of arm muscles. However those two muscles are located in your legs! Actually, the biceps femoris can be found on the back of your tight while the triceps surae is located at the calf. Like for your arm, it is called biceps because it implies two parts as the triceps means that there are three-headed.