In tanks using a flapper-flush valve, the outlet at the bottom of the tank is covered by a buoyant (plastic or rubber) cover, or flapper, which is held in place against a fitting (the flush valve seat) by water pressure. To flush the toilet, the user pushes a lever, which lifts the flush valve from the valve seat.
Intestines make up the digestive tract. Photo Credit Denis Raev/iStock/Getty Images. Your intestines make up most of your digestive tract. Much of your digestion takes place in your small intestine, while your large intestine absorbs water and excretes waste. Inflammation of the intestines is the primary characteristic of inflammatory bowel diseases, or IBDs, which include Crohn's disease and colitis. Though dietary measures cannot cure IBDs, according to the Crohn's and Colitis Foundation of America, certain foods may support intestinal healing and help alleviate symptoms.
The main parts of the digestive system are the mouth, esophagus, stomach, small intestine, large intestine, liver, gull bladder, and pancreas. Food does not actually pass thro â¦ ugh the liver, gull bladder and pancreas, but they do produce a green liquid called bile that helps digestion.he blood carries nutrients from the small intestine to all over the body. The villi in the small intestine allow nutrients from digested food to pass through the intestinal w â¦ all to the blood vessels. Then the blood carries the nutrients away. 1 person found this useful.