AP BIOLOGY

Detailed explanation-1: -Rectus abdominis: This pair of muscles goes down the middle of your abdomen from your ribs to the front of your pelvis. The muscles hold your internal organs in place and keep your body stable during movement. The rectus abdominis may form bumps sometimes called a “six-pack” when someone has a trim, fit abdomen.

Detailed explanation-2: -Rectus means straight. The rectus abdominis is a straight abdominal muscle.

Detailed explanation-3: -In Latin, rectus means straight and abdominis means abdominal. Therefore, rectus abdominis simply means straight abdominal, a term which references the structure of this paired muscle. The rectus abdominis muscle is intersected by bands of fibrous connective tissues called tendinous intersections.

Detailed explanation-4: -Rectus abdominis, informally known as the abs muscle, is a long muscle of the anterior abdominal wall. In those with low body fat, it is clearly visible beneath the skin forming the ‘six pack’.