In humans and some other mammals, the<unk> eus is a powerful muscle in the back part of the lower leg (the calf).   It runs from just below the knee to the heel, and is involved in standing and walking. It is closely connected to the gastrocnemius muscle and some anatomists consider them to be a single muscle, the triceps surae. Its name is derived from the<unk> efish whose shape it resembles.
The<unk> eus is located in the superficial posterior compartment of the leg.  Not all mammals have a<unk> ; one notable species that lacks the<unk> eus is the dog.
Soleus muscle
Cremaster muscle
Multifidus muscle
Sartorius muscle
Splenius capitis muscle
Gluteus maximus muscle
Levatores costarum muscles
Rectus femoris muscle