What do the calf muscles do?

What do the calf muscles do?

• A. Dorsiflex the foot
• B. Plantarflex the foot
• C. Extend the knee
• D. Abduct the thigh

Answer: (B)

Calf muscles primarily move the foot at the ankle, enabling plantarflexion. When they contract, the heel rises and the toes point downward, which is the action used when standing on tiptoes, pushing off while walking or running, and jumping. The two main calf muscles are the gastrocnemius and the soleus, and they connect to the heel via the Achilles tendon. The gastrocnemius crosses both the knee and ankle, so it can assist with knee bending as well as plantarflexion, while the soleus focuses on plantarflexion at the ankle. Dorsiflexion is performed by muscles in the front of the leg, not the calves; extending the knee is done by the quadriceps, and abducting the thigh is a hip movement handled by the gluteal muscles, not the calf.

Calf muscles primarily move the foot at the ankle, enabling plantarflexion. When they contract, the heel rises and the toes point downward, which is the action used when standing on tiptoes, pushing off while walking or running, and jumping. The two main calf muscles are the gastrocnemius and the soleus, and they connect to the heel via the Achilles tendon. The gastrocnemius crosses both the knee and ankle, so it can assist with knee bending as well as plantarflexion, while the soleus focuses on plantarflexion at the ankle. Dorsiflexion is performed by muscles in the front of the leg, not the calves; extending the knee is done by the quadriceps, and abducting the thigh is a hip movement handled by the gluteal muscles, not the calf.