It means we do not consciously contract the muscles, i.e, when we desire. Further, it means that the muscles are controlled by the autonomic nervous system. Example of involuntary muscle contraction is peristalsis. These are muscle movements in the gastrointestinal tract that assist food move along the oesophagus to the stomach.
Answer: an involuntary muscle is a muscle that you cannot control... Like the heart and breathing. The heart beats on its own and pumps blood on its own
