intestines, guts with bubble on background. digestive system, tract with intestinal gas. bloating, gastritis. digestive

abdomen alimentary anatomical anatomy anus appendix background bacteria bladder bloating body bowel care colon constipation cute diagram digestion digestive disease flora food gastric gastritis gastrointestinal gut health healthy human icon ileum illustration internal intestinal intestine intestines isolated large medical organ physiology rectum science sign small stomach system vector virus white