Question
Biology Question on Digestion and absorption
Once the undigested and unabsorbed substances enter the caecum, their backflow is prevented by
A
Ileo-caecal valve
B
Gastro-oesophageal sphincter
C
Pyloric sphincter
D
Sphincter of Oddi
Answer
Ileo-caecal valve
Explanation
Solution
The ileo-cecal valve is located between the small intestine (ileum) and the large intestine (cecum). It prevents the backflow of undigested and unabsorbed substances from the large intestine (cecum) back into the small intestine (ileum), thus helping to maintain the flow of digestion and absorption in the correct direction.
The correct option is (A): Ileo-caecal valve