How is flatus typically expelled from the body?

Flatus, commonly known as intestinal gas, is expelled from the body primarily through the anus. This process occurs as a natural result of digestion and metabolism, where gas produced in the intestines is released. The gas can accumulate in the digestive tract and is typically vented out through the rectum.

Expelling gas through the anus is a normal bodily function and is often accompanied by flatulence. The other methods mentioned for expelling gas, such as through the mouth, skin, or bladder, do not play a significant role in the release of intestinal gas. When gas is expelled orally, it is considered belching rather than flatus. The skin does not facilitate the expulsion of gases, and the bladder is primarily involved in the urinary system, not in expelling digestive gases. Thus, the anus is the appropriate and correct outlet for flatus.