Look at the rectus abdominis as an example, and break down its function. The primary function of the rectus adominis is torso flexion, and it works in synergy with other muscles to compress the ...

Rectus abdominis. The rectus abdominus muscle is the muscle people are usually referring to when they mention “ abs .” This is the muscle that forms a “six-pack” at the front of your core.

Rectus abdominis: superficial muscles that run down the front of the stomach and form the six-pack, aiding bending or front flexion; Transversus abdominis: ...

All that hammering for the washboard core is hurled against the rectus abdominis, a muscle that runs from the ribcage to the pelvis. Physical fitness is the ability to perform tasks with ease, ...