| A | B |
| Dysphagia | Difficulty in swallowing |
| Flatus | Gas expelled from the anus |
| Barium Enema | Examination of large intestine |
| Barium Swallow | Examination of small intestine |
| Anal Fistula | Abnormal tube like passageway from rectum to anus |
| IBD | Inflammatory bowel disease |
| Volvulus | Twisting of the intestines upon itself |
| Hepatitis | Inflammation of the liver |
| Diarrhea | Loose watery stools |
| Gingivitis | Inflammation of gums |
| Melena | Black tarry stools containing blood |
| Polyps | Small growths in the intestinal tract, usually benign |
| Jaundice | Yellowing of skin |
| Gastrorrhexis | Rupture of stomach |
| Orifice | Opening |
| Hernia | Protrusion of an organ through the cavity that contains it |
| Alk Phos | Enzyme test on serum to detect liver disease |
| Colostomy | Surgical creation of a new opening from colon to outside of body |
| Pyrosis | Heartburn |
| Transverse colon | Third part of large intestine |
| Borborygmus | Rumbling gas sounds in the intestines |
| Cirrhosis | Abnormal liver cells usually due to alcohol intake |
| Oral cavity | Mouth |
| Dyspepsia | Indigestion |
| Peptic ulcer | Inflammation of the colon |
| Emesis | Vomiting |
| SGOT/SGPT | Liver function tests |
| Leukoplakia | White patches in the mucous membrane |
| Nasogastric Intubation | Tube placed in nose and running down throat to stomach |
| Ascites | Abnormal accumulation of fluid in the peritoneal cavity |
| Colitis | Erosions of tissue in stomach and/or duodenum |
| Constipation | Delayed defecation of stools |
| Regurgitation | Return of swallowed food to mouth |
| Herpes labialis | Cold sores |
| Hepatomegaly | Enlargement of liver |
| Dysphasia | Difficulty with speech |
| Anastomosis | Surgical joining of two parts |
| Hemorrhoids | Swollen veins in the rectal area |
| Anorexia | Lack of appetite |
| Nausea | Sensation of urge to vomit |
| Belching | Eructation |
| Diverticula | Small out pouches in the intestinal tract |
| Proctoplasty | Surgical repair of anus/rectum |
| Gastroenteritis | Inflammation of stomach and small intestines |
| Cholelithiasis | Gallstones |
| Epiglottis | Flap of cartilage in the throat area |
| Digestion | Breakdown of food into smaller particles |
| Cecum | First part of large intestine |
| Gastrorrhagia | Bleeding from the stomach |
| Stool guaiac | Hemoccult test to determine blood in feces |