Based on the popular children's book by Dr. Seuss, Horton Hears a Who! tells the thoughtful story of Horton, an elephant who is faithful one hundred percent.. Horton's story has delighted children for over 50 years, and now the loyal elephant stars in his own beautifully animated movie.
1 Activate Your Free Trial!  Gastrocnemius muscle. Gastrocnemius muscle, also called leg triceps, large posterior muscle of the calf of the leg. It originates at the back of the femur (thighbone) and patella (kneecap) and, joining the soleus (another muscle of the calf), is attached to the Achilles tendon at the heel.
Â© 2014 WebMD, LLC. All rights reserved. The calf muscle, on the back of the lower leg, is actually made up of two muscles: 1  The gastrocnemius is the larger calf muscle, forming the bulge visible beneath the skin. 2  The gastrocnemius has two parts or heads, which together create its diamond shape. 2014 WebMD, LLC. All rights reserved. The calf muscle, on the back of the lower leg, is actually made up of two muscles: 1  The gastrocnemius is the larger calf muscle, forming the bulge visible beneath the skin. 2  The gastrocnemius has two parts or heads, which together create its diamond shape.