Strong Fitness Bodybuilding Girl With Abdominal Six-pack Belly Muscles

Functionally, the human abdomen is where most of the alimentary tract is placed and so most of the absorption and digestion of food occurs there. The alimentary tract in the abdomen consists of the lower esophagus, the stomach, the duodenum, the jejunum, ileum, the cecum and the appendix, the ascending, transverse and descending colons, the sigmoid colon and the rectum. Other vital organs inside the abdomen include the liver, the kidneys, the pancreas and the spleen.
The abdominal wall is split into the posterior (back), lateral (sides), and anterioriet (front) walls.
• Muscles
The transversus abdominis muscle is flat and triangular, with its fibers running horizontally. It lies between the inner oblique and the underlying transversalis fascia. It originates from Poupart's ligament, the inner lip of the ilium, the lumbar fascia and the inner surface of the cartilages of the six lower ribs. It inserts into the linea alba behind the rectus abdominis.