License Image The gastrointestinal system has two components, the gastrointestinal tract and the accessory digestive organs. The gastrointestinal tract is a long muscular tube which extends from the mouth to the anus. It includes the oral cavity, pharynx, esophagus, stomach, duodenum, small intestine, large intestine, rectum and anus. The accessory digestive organs are: the salivary […]
License Image This image depicts the location of the stomach, duodenum, esophagus, pharynx and oral cavity.
License Image Areas of the stomach depicted are the cardia, fundus, body and pylorus. The Z line is the transition of the squamous epithelium (lining) of the esophagus to the columnar epithelium of the stomach. This area is where Barrett’s esophagus can occur. When acid reflux, or GERD, causes irritation it can lead to dysplasia […]
License Image The large intestine is divided into the cecum, colon, rectum and anal canal. The large intestine begins at the cecum. The ileum (small intestine) ends where it connects to the cecum at the ileocecal junction. The colon is divided into four parts: the ascending, transverse, descending and sigmoid. The ascending and transverse colon […]
License Image This image depicts colon cancer staging starting with a benign poylp in the large intestine (colon). Stage 0 shows only the innermost layer, or mucosa, of the colon infiltrated by cancer. Stage I (Dukes A), cancer has spread to the connective tissue submucosa. Stage II (Dukes B), cancer has invaded the muscular layer […]