|located at the junction of stomach duodenum; constricted to close stomach oulet; relaxes just to allow food to pass into duodenum|
|the middle portion of the small intestine, between the duodenum and the ileum.|
rectum rec·tum (rěk'təm)
n. pl. rec·tums or rec·ta (-tə)
The terminal portion of the large intestine, extending from the sigmoid flexure to the anal canal.