Biology - Digestion and Absorption Question with Solution | TestHub

The ileum is the highly coiled, terminal portion of the small intestine which opens into the caecum of the large intestine.

Serosa is the outermost layer of the human alimentary canal, while mucosa is the innermost layer.

The mucosal layer forms irregular folds called rugae in the stomach, whereas in the small intestine, it forms small finger-like projections called villi.

The vermiform appendix is a narrow finger-like tubular projection which is a vestigial organ and arises from the caecum, not the duodenum.

Answer: Ileum opens into large intestine.