External oblique muscle

The External Oblique is one of the abdominal muscles and is situated on the lateral and anterior parts of the abdomen. It forms part of the group of muscles known as the obliques, which also includes the internal oblique. The external oblique is the largest and most superficial of the abdominal muscles.

The External Oblique has a broad origin, with its muscle fibres running downward and medially. The muscle originates from the lower eight ribs and inserts into the linea alba (a fibrous band of tissue running down the midline of the abdomen), the iliac crest (the bony prominence of the hip), and the pubic tubercle.

Functionally, the External Oblique is involved in several movements of the trunk. It plays a significant role in trunk flexion, lateral flexion (side-bending), and rotation of the trunk. When both sides contract simultaneously, it aids in forward bending, and when one side contracts, it assists in side-bending and rotation to the opposite side.

Strengthening exercises that engage the External Oblique include oblique crunches, side planks, and Russian twists. These exercises help promote core strength and stability. Stretching exercises can also be beneficial for maintaining flexibility and preventing tightness in the abdominal region.

In summary, the External Oblique is a crucial muscle in the abdomen, contributing to trunk flexion, lateral flexion, and rotation. Understanding its role and incorporating appropriate exercises are essential for promoting overall core strength and functionality.