01 / Location & anatomical relationships
At the back of the lower leg.
02 / Structure & organization
Gastrocnemius and soleus form the main superficial calf mass and contribute to the calcaneal tendon. Gastrocnemius crosses both knee and ankle; soleus crosses the ankle only. Deeper muscles also act on the foot and toes.
03 / Function
Its muscles help raise your heel when you walk or stand on tiptoe.
04 / Mechanism
Calf muscles pull through the Achilles tendon, which attaches to the heel. This raises the heel and helps push your body forward. The muscles also contribute to steadiness when standing.
Part of a bigger picture
The calf belongs in our legs & feet collection. Explore the nearby parts to see how this area of the body fits together.
Explore legs & feet →FOR DEEPER STUDY
Connect structure with function
Calf contraction raises the heel and helps venous return through compression of deep veins. Knee position changes the mechanical contribution of gastrocnemius.
Check your understanding
Locate the calf in relation to its neighbors. Explain how the structural features described above support its function, then distinguish it from a nearby structure with a different role.
Keep learning
Continue with OpenStax Anatomy and Physiology for system-level study. This atlas is educational and has not undergone independent medical peer review.