Anterior view of the abdominal region. Greater omentum, stomach and transverse colon have been reflected upward. Small intestines have been removed to reveal the abdominal aorta bifurcation and the peritoneum of the posterior wall.

Photo of an posterior view of an adult male onto which areas of visceral pain have been projected.

Anterior view of small and large intestines in situ, ileum reflected to reveal mesentery, sigmoid colon, and aorta.

Illustration of intestinal tract of lower abdomen with a double-barrel colostomy created in the transverse portion of the colon.

Illustration of intestinal tract of lower abdomen with a single-barrel colostomy created in the ascending portion of the colon.

Schematic illustration of anterior view of liver in situ. Liver pictured on a page in a book with surrounding anatomy; jejunum, ileum, and ascending, transverse, and descending colon have been removed.

Posterior view of the colon, small intestines, and rectum.