Question

Explain Stomach with diagram.

Answer 1

The stomach, located in the upper left portion of the abdominal cavity, has three major parts - a cardiac portion into which the esophagus opens, a fundic region and a pyloric portion which opens into the first part of small intestine. The small intestine is distinguishable into three regions, a U' shaped duodenum, a long coiled middle portion jejunum and highly coiled ileum. The opening of the stomach into the duodenum is guarded by the pyloric sphincter. lleum opens into the large intestine. It consists of caecum, colon, and rectum. The caecum is a small blind sac which hosts some symbiotic micro-organisms. A narrow finger-like tubular projection, the vermiform appendix which is a vestigial organ, arises from the caecum. The caecum opens into the colon. The colon is divided into three parts- an ascending, a transverse and a descending part. The descending part opens into the rectum which opens out through the anus.