Muscular+System

[|Rectus abdominis] There are three types of muscle in the pig:
 * **Involuntary or smooth muscle** - Found in the digestive and genital systems and the blood vessel walls.
 * **Cardiac muscle** - The heart consists largely of this muscle. It is involuntary.
 * **Voluntary or skeletal muscle** - This is the main muscle mass forming the muscular-skeletal system. These muscles are attached to the surface membrane covering bones called the periosteum. Inflammation of this covering is called periostitis.

- Info by melissa!

All Muscles Work In Pairs! For example, your abdominal muscles consist of four muscles that are often referred to as 'abs'. The abs include the [|Rectus abdominis], the [|Transversus abdominis] , and a pair of muscles; the [|Internal] and [|External] obliques.

[|Human Muscular System]