What is the function of the rectum?

Answer 1

The rectum is a muscular ring that is at the end of the large intestine. Its function is to keep the intestine sealed shut until the need to pass feces arises. When that need arises it assists in the moving of the feces out of the body.

The main function of the rectum is to act as a temporary storage site for fecal matter before it is eliminated from the body through the anal canal. As the food you eat passes through the digestive system, it is broken down and nutrients are absorbed in the stomach, small and large intestines. Fecal matter, which includes digestive juices, bacteria and fiber, continues to move into the lower portion of the large intestine -- the rectum. The rectum holds the feces until you push it out of the body, through the anal canal, by having a bowel movement.

The rectum is made up of muscular walls that are able to expand to hold fecal matter. With this expansion of the rectum, nerves in the area send signals to the brain that you need to have a bowel movement and muscles in and around the anal canal control the action. Adults and older children are able to control these muscles, relaxing them to release the feces from the rectum or contracting them to avoid having a bowel movement.
The function of the rectum is to hold the feces until it is eliminated from the body through the anal canal and anus.

1. to collect the undigested waste of the body
2. to eliminate it as feces.

Answer 2

The rectum's purpose is to contain stool until it can be released through the anus at a convenient time.