What is the main structure that comprises the large bowel?

The large bowel, also known as the large intestine, is primarily composed of the colon and rectum. The colon is divided into several parts, including the cecum, ascending colon, transverse colon, descending colon, and sigmoid colon, which all play a crucial role in absorbing water and electrolytes from indigestible food matter and preparing waste for elimination. The rectum serves as the final section of the large intestine, where fecal matter is stored before it is expelled from the body. The complexity and function of the colon and rectum highlight their significance as the main structures comprising the large bowel.

Understanding the anatomy of the large bowel is essential for comprehending various digestive processes and potential medical conditions that may affect this part of the gastrointestinal system.