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Voluntary muscles are the muscles that can be controlled consciously, and are made up of cylindrical fibres. Generally, these muscles are attached to bones of the skeleton, thus called the skeletal muscles. Skeletal muscles are striated and are made up of multinucleate cells.
Skeletal muscles are also called voluntary muscles because, unlike the other two types of muscle in the body, smooth muscle and cardiac muscle, they are under conscious control. The most important and unique feature about muscle tissue is that it is able to contract (shorten) when stimulated by nerve impulses.