Stomachal muscles, also known as abdominal muscles, are a group of muscles located in the abdominal region of the body. These muscles are responsible for the movement and support of the spine and trunk, as well as for the protection of the internal organs. When referring to these muscles, there are several synonyms that can be used, including abs, core muscles, abdominal wall muscles, tummy muscles, and six-pack muscles. Each of these terms is used to describe the same group of muscles located in the abdomen and are commonly targeted during exercise routines to strengthen and tone the midsection.