Rektus

Rektus is a term derived from the Latin word "rectus," which means "straight" or "upright." In anatomy, the rectus muscles are a group of muscles that run vertically along the midline of the body. They include the rectus abdominis, rectus femoris, and rectus capitis anterior. The rectus abdominis is the most well-known, forming the "six-pack" in the abdominal region. These muscles play crucial roles in various bodily functions, such as maintaining posture, supporting the spine, and facilitating movement. The rectus femoris is involved in knee extension, while the rectus capitis anterior is responsible for neck flexion. Despite their name, not all rectus muscles are straight; some, like the rectus capitis anterior, have a slight curvature. The term "rektus" is also used in the context of cryptocurrency and blockchain, where it refers to a significant loss or failure, often due to a hack or exploit.