Digestive System/ The Gastrointestinal Tract Salivary glands Oesophagus Stomach Duodenum Pancreas Colon Small Intestine Liver Bile Appendix Gall Bladder Rectum Tongue Villi Anus Mini-Glossary Root Words cheil/o (lip, lips) hepat/o (liver) col/o (colon) pancreat/o (pancreas) dent/o (teeth) proct/o (anus and rectum) esophag/o (esophagus) rect/o (rectum) gingiv/o (gums) stomat/o (mouth) gloss/o (tongue) Suffixes -clysis (irrigation) -scope, -scopy (look, examine) -ectasia (dilation, stretching) -toxin (poison) Broken down, “gastrointestinal” indicates the gastric area, or the stomach, and the intestinal area immediately following the stomach to the anus, the outlet of the GI system or tract. This section of the head-to-toe assessment provides information about the health of these organs and the function of digestion and bowel elimination, including potential problems. Closely tied to the GI assessment is the abdominal assessment. These two areas are anatomically so close together that they may even be documented in one section of a head-to-toe assessment, providing data about masses, tenderness, and abnormalities inside the abdomen The digestive tract begins at the mouth, the oral cavity. The human mouth is concerned with vocalization as well as mastication (chewing) and swallowing. The anterior portion includes lips, teeth, gums, a muscular tongue, related muscles, salivary glands, a bony palate, and muscles of the cheek wall. All are concerned with wetting, macerating, and pulverizing ingested material. The posterior portion of the oral cavity includes the soft palate, tongue, tonsils, and taste buds. mouth (stomat/o) lip (cheil/o) tongue (gloss/o) gum (gingiv/o) tooth (dent/o) The function of the digestive system is to break down large food particles into smaller ones that can pass across the membranes of cells and be absorbed. The digestive tract, also known as the alimentary canal, consists of a single long tube extending from mouth to anus and opened to the exterior at each end. The canal begins with the oral cavity. Here the teeth pulverize ingested food. Meanwhile it is softened and partly digested by salivary gland secretions. The tongue aids in mechanical manipulation of the food and literally flips the food into the fibromuscular pharynx during swallowing. The oesophagus moves the food bolus along to the pouch like stomach by peristaltic muscular contractions. Here the food mixes with acid and protein-digesting enzymes and is retained until digested further. Passing from the stomach, the food enters the first part of the small intestine, called the duodenum. Liver-produced bile, stored in the gallbladder, is discharged into the duodenum by bile ducts. Digestive enzymes from the pancreas enter the duodenum as well. The food bolus continues through the highly coiled 20-foot-long small intestine. A great portion of the abdominal cavity is taken up by the many folds and twists of this organ. Small molecular nutrients are extracted and absorbed by cells lining the intestine. These nutrients absorbed throughout the tract are transferred to capillaries and transported to the liver by the hepatic portal system for processing and distribution to the body’s cells. The colon or large intestine can be seen ascending along the anatomical right side, passing across the midline, then turning and descending along the left. This organ is mainly concerned with absorption of water, minerals, and certain vitamins. The non-nutritive residue of the ingested food is compacted and moved through the rectum and the anal canal to the outside. liver (hepat/o) stomach (gastr/o) pharynx (pharyng/o) gallbladder (cholecyst/o) esophagus (esophag/o) duodenum (duoden/o) intestine (enter/o) colon (col/o) rectum and anus (proct/o) pancreas (pancreat/o) rectum (rect/o) anus (an/o)