3rd & last post b4 final reflection (Part 2)

the first stop of the gut is the mouth,in which the teeth crush and cut food and the saliva from the salivary glands (which contain the enzyme amylase to break starch down)chemically digests the food too,and the tongue helps with mixing the food with the saliva,and rolling the food into a ball to be swallowed.In the gullet,the muscles in the walls push the food down to the stomach by a process called peristalsis.In the stomach,gastric juices made of dilute hydrochloric acid and proteases(which digests proteins into amino acids)digest the food. The acid is so as to provide the acidic conditions for the proteases to work,kills bacteria ingested,and also digests the food further. A layer of mucus protects the stomach from the gastric juices. The resulting semi-liquid mixture,a.k.a chyme is then moved bu peristalsis to the small intestine,and digested with the mix of liquids from the liver,gall bladder,pancreas and small intestine completes the digestion process,and the nutrients from the food is absorbed into the blood stream via the wall of the small intestine,filled with villi. The rest of the undigested food goes to the large intestine for absorption of excess water,mineral salts and certain vitamins produced by bacteria living in the large intestine. The rest of the food is then stored in the rectum. The muscles in the rectum stay contracted,but when they relax the faeces are pushed out of the body through the anus.