What are Muscles of the heart made of?

Answer 1

There are three different types of muscles in the body: Skeletal, smooth, and cardio. All muscles are made up of fibers from the molecules actin and myosin. These fibers can be seen with the aid of the electron microscope. Skeletal muscles can be moved voluntarily, and control parts of the body which you can move at will. (Arms, feet, fingers, etc...) Smooth muscles are controled by the central nervous system. Smooth muscles control parts of the body not governed by voluntary action, but by the brain and hormones. This includes the stomach, small intestines, pacreas, etc.. Cardio muscles are found only in the heart. These cells are programmed to "beat" from the beginning. In fact, many lab tests have shown that cardio muscles grown outside of a test animal will actually start to "beat" together as their numbers grow.