Rectus abdominis

The Rectus Abdominis, commonly known as the 'abs,' is a paired muscle located in the anterior (front) abdominal wall. It is a long, flat muscle that extends vertically, running from the pubic symphysis at the pelvis to the xiphoid process of the sternum and the costal cartilages of the lower ribs.

The Rectus Abdominis is segmented by tendinous intersections, giving it a segmented or 'six-pack' appearance in well-defined individuals. This muscle is crucial for various movements involving the trunk and plays a significant role in providing core stability.

Functionally, the Rectus Abdominis is responsible for flexing the lumbar spine, bringing the ribcage closer to the pelvis. It is actively engaged during activities such as crunches, sit-ups, and leg raises. Additionally, the muscle contributes to maintaining posture and stabilising the pelvis during movements.

Strengthening exercises that target the Rectus Abdominis include abdominal crunches, leg raises, and planks. These exercises help develop the muscle's strength and definition. Incorporating rotational movements, such as Russian twists, can engage the oblique muscles that run along the sides of the Rectus Abdominis.

In summary, the Rectus Abdominis is a central muscle in the abdominal region, contributing to trunk flexion and core stability. Understanding its structure and function and incorporating appropriate exercises are essential for promoting overall core strength and functionality.