Muscular force is a contact force
They need good muscles for their application.
They are caused by the action of our muscles.
Muscular forces are caused by the action of our muscles. Muscular force is a contact force and it needs contact between two surfaces to act.
A structure which has been moved by a muscle cannot return to its original position without the action of another muscle. Such muscles causing opposing movements are called __(antagonistic muscles/ smooth muscles).