Which structure normally prevents the backflow of colonic contents into the ileum?
Correct answer: B. Ileocecal valve
- A. Pyloric sphincter
- B. Ileocecal valve
- C. Anal sphincter
- D. Lower oesophageal sphincter
Explanation
The ileocecal valve lies between the ileum and caecum and helps prevent reflux of colonic contents into the small intestine. The pyloric sphincter controls gastric emptying, while the other sphincters are located at different parts of the alimentary canal.
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About Digestive System
The digestive system covers the structure and functions of the alimentary canal from mouth to anus, along with the liver, gallbladder and pancreas. It explains mechanical and chemical digestion, the action of major enzymes, absorption through intestinal villi, and how digestion differs from absorption and assimilation.
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