What are the three types of muscles in the muscular system?

The three types of muscles in the muscular system are skeletal, smooth, and cardiac. Skeletal muscles are attached to bones and are responsible for voluntary movements, allowing us to perform activities such as walking, lifting, and writing. These muscles are striated in appearance and are under conscious control.

Smooth muscles, on the other hand, are found in the walls of hollow organs such as the intestines and blood vessels. They are responsible for involuntary movements, which means they function without conscious thought. These muscles help regulate processes like digestion and blood circulation.

Cardiac muscle makes up the heart and is unique in that it has characteristics of both skeletal and smooth muscle. Like skeletal muscle, cardiac muscle is striated, but it operates involuntarily. This muscle is specialized for the rhythmic contractions needed to pump blood throughout the body.

The other options contain incorrect classifications or combinations of muscle types, failing to accurately represent the recognized categories within the muscular system.