What is the term used for the lower part of the large intestine?

The lower part of the large intestine is referred to as the rectum. This section plays a crucial role in the digestive process as it stores stool until it is ready to be eliminated from the body. The rectum functions as the final segment of the large intestine, connecting to the anus, which is the opening through which stool exits the body. Understanding the anatomy of the lower part of the large intestine is important as it helps in comprehending various digestive processes and potential health issues related to this area.

The colon is a significant part of the large intestine as well, but it is not the lower part; it includes sections such as the ascending, transverse, descending, and sigmoid colon. The sigmoid is the part of the colon that connects to the rectum but does not encompass the entirety of the lower large intestine. The anus, while crucial for the elimination of waste, is the terminal outlet and not a part of the large intestine itself.