NEET 2020
- Exam
- NEET
- Year
- 2020
- Subject
- Zoology
- Chapter
- Digestion and Absorption
NEET 2020 · Zoology · Digestion and Absorption
Identify the correct statement with reference to human digestive...
Identify the correct statement with reference to human digestive system.
Options
- ASerosa is the innermost layer of the alimentary canal
- BIIeum is a highly coiled part
- CVermiform appendix arises from duodenum
- DIIeum opens into small intestine
Correct answer
B. IIeum is a highly coiled part
Step-by-step solution
Serosa is the outermost layer of the alimentary canal while mucosa is the innermost layer.
Ileum (highly coiled, the longest portion): Longest part of the alimentary canal (3.5 m long). It contains a large number of villi (microvilli) which helps in the absorption of food. Ileum, the last part of the small intestine leads into the large intestine.
The appendix is attached to the caecum which is a vestigial organ and its infection leads to appendicitis.