Ascending colon is fully covered by peritoneum

The statement is partially correct. The ascending colon is a part of the large intestine that carries feces from the cecum to the transverse colon. It is located on the right side of the abdominal cavity and is about five inches long.

The ascending colon is secondarily retroperitoneal, meaning it was originally covered in peritoneum (a membrane that lines the abdominal cavity and covers abdominal organs) but during the course of embryological development, it became fixed to the dorsal abdominal wall, and the peritoneum only covers its anterior surface and sides, but not the posterior surface.

So, it's not fully covered by peritoneum, but only on the front and sides.