human digestion

human digestion organs stomach esophagus small intestine large colon rectum anus liver pancreas gallbladder absorption metabolism food peristalsis gut microbiota digestive enzymes amylase protease lipase hydrochloric acid bile breaking nutrients body gastrin cholecystokinin secretin constipation diarrhea gastroesophageal reflux disease poisoning borne irritable bowel syndrome ibs health ulcerative colitis crohns celiac diverticulitis gallstones pancreatitis peptic ulcer hemorrhoids gastrointestinal bleeding colorectal cancer hepatitis cirrhosis appendicitis elements blue background system absorbing eliminating waste disorders intestines