http://www.ck12.org Chapter 1. Human Biology
1.9 Smooth, Skeletal, and Cardiac Muscles
- Identify the three muscle types in the body.
Does the heart have muscles?
When you think of muscles, you might think of biceps and the external muscles you see in a bodybuilder. However,
some muscles are found deep inside your body. The heart, for example, is a very muscular organ. It has to pump
blood all around your body.