What muscles allow you to push out a bowel movement?

The primary muscles involved in pushing out a bowel movement are the abdominal muscles and the pelvic floor muscles. The abdominal muscles, including the rectus abdominis and obliques, contract to increase intra-abdominal pressure. Additionally, the diaphragm plays a role in this process by also contributing to pressure changes. The pelvic floor muscles help to support the pelvis and control the passage of stool through the anal canal.