Others are attached to other muscles?

leg bicepes and hamstrings insert into each other at the thigh.

Cardiac muscles can work without fatigue.

Muscles do not attach to other muscles. They only attach to bone.

Muscles work in agonistic and antagonistic pairs; an example is the bicep and the tricep. When you flex your arm, the bicep is the agonist (the contracting muscle) and the tricep is the antagonist...

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