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Read the following statements (A - D). ...

Read the following statements (A - D).
A - Solidification of faeces in the rectum, reduces the urge for defaecation.
B - Vomiting is a reflex action
C - Electrolytes like Cl - are absorbed in the gut by simple diffusion
D - Micelles are formed in gut lumen
How many of the above statements are correct?

A

None

B

One

C

Two

D

Three

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many of the statements (A - D) are correct, let's analyze each statement one by one: ### Step-by-Step Solution: 1. **Statement A**: "Solidification of faeces in the rectum reduces the urge for defaecation." - **Analysis**: This statement is correct. When faeces solidify in the rectum, it indeed reduces the urge to defecate as the rectum becomes filled and the stretch receptors signal that the bowel is full, leading to a decreased urge to defecate. - **Conclusion**: Statement A is correct. 2. **Statement B**: "Vomiting is a reflex action." - **Analysis**: This statement is also correct. Vomiting is controlled by the vomiting center located in the medulla oblongata of the brain and is indeed a reflex action that occurs in response to various stimuli. - **Conclusion**: Statement B is correct. 3. **Statement C**: "Electrolytes like Cl- are absorbed in the gut by simple diffusion." - **Analysis**: This statement is correct. Electrolytes, including chloride ions (Cl-), can be absorbed in the gut through simple diffusion, especially when there is a concentration gradient. - **Conclusion**: Statement C is correct. 4. **Statement D**: "Micelles are formed in gut lumen." - **Analysis**: This statement is incorrect. Micelles are actually formed in the liver and gallbladder and play a crucial role in the absorption of fat-soluble vitamins and lipids in the intestine, but they are not formed in the gut lumen itself. - **Conclusion**: Statement D is incorrect. ### Summary of Correct Statements: - Correct Statements: A, B, C - Incorrect Statement: D ### Final Answer: Out of the four statements, **three statements (A, B, and C) are correct**.
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