the heart
There is no such thing as an "organ of muscles".
yes it is a organ
the main organ of the muscular system is the muscles
Muscles are group of tissues.
The main organ in the muscular system is the muscles.
Cardiac muscles form the heart.
the muscles
the organ
muscles
The muscles.
The muscles
The medical term for muscles located within an organ is "smooth muscles" or "involuntary muscles." These muscles are responsible for the involuntary movements of internal organs, such as those in the digestive system, blood vessels, and uterus.