Does the external oblique muscle compress the abdominal wall and flexes the vertebral column?

Yes, the external oblique muscle plays a crucial role in compressing the abdominal wall, which helps support internal organs and maintain intra-abdominal pressure. Additionally, it assists in flexing the vertebral column, particularly when bending forward or rotating the torso. This muscle contributes to movements such as twisting and side bending of the trunk as well.