Foot Conditions A-Z
The calf is made up of two muscles--the gastrocnemius, which is the muscle you can see and feel, and the soleus, which lies underneath the gastrocnemius in the back of the leg. These muscles come together at the Achilles’ tendon, which in turn attaches to your heel. The function of the calf muscles is to raise the heel as you extend (point) your foot. So these muscles are activated every time you walk, run or jump.