The muscle fibers run in the opposite direction to the external obliques, and while they have the same movement roles, they also work opposite to each other. ![]() Internal obliques: This broad and thin pair of muscles are located on each side of the rectus abdominis and are deep to the external obliques (covered by the external obliques). Furthermore, the external obliques aid in contracting the abdomen. It is also responsible for resisting these movements. It main responsibility is to twist the body left and right and to bend side to side. It is the largest of the lateral abdominal muscles (the other two being the internal obliques and the transversus abdominis). When performing any flexion or anti-flexion of the core, your rectus abdominis will be activated.Įxternal obliques: These large flat pairs of muscles are located on each side of the rectus abdominis. With low enough body fat, the external obliques can be seen as it is a superficial muscle. The primary job of this muscle is to hold your internal organs in place and move the body between the ribcage and pelvis. ![]() It is actually a paired muscle that is divided into two halves (left and right) by a band of connective tissue called the linea alba. As a whole, the rectus abdominis is your "six-pack" (or 2, 4, 8, or even 10 pack depending on your ab structure - everyone is different). Rectus abdominis: The rectus abdominis is a long muscle that extends from the bottom of your sternum to the bottom of your pelvis. Let’s take a closer look at the muscles within your abdominals:
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