Which of the following is excretory product of liver?

Options

A. Carbon dioxide
B. Bilirubin
C. Biliverdin
D. More than one option is correct

Answer

To determine which of the following is an excretory product of the liver, we need to analyze the options provided: carbon dioxide, bilirubin, biliverdin, and whether more than one option is correct.

### Step-by-Step Solution:

1. **Understanding Excretory Products**:
- Excretory products are waste materials that are eliminated from the body. The liver plays a crucial role in the metabolism and detoxification of various substances.

2. **Analyzing Carbon Dioxide**:
- Carbon dioxide (CO2) is primarily an excretory product of the lungs, not the liver. It is produced during cellular respiration and expelled from the body through the respiratory system.

3. **Identifying Liver-Related Excretory Products**:
- The liver produces bile, which contains bile pigments. The two main bile pigments are bilirubin and biliverdin.

4. **Understanding Bilirubin and Biliverdin**:
- **Bilirubin**: This is a waste product formed from the breakdown of hemoglobin in red blood cells. It is a yellow compound that is excreted in bile.
- **Biliverdin**: This is a green pigment that is formed from the oxidation of bilirubin. It is also associated with the breakdown of hemoglobin.

5. **Conclusion**:
- Since both bilirubin and biliverdin are produced as a result of the liver's processing of hemoglobin from red blood cells, they are both considered excretory products of the liver.
- Therefore, the correct answer to the question is that more than one option is correct, specifically bilirubin and biliverdin.

### Final Answer:
- The excretory products of the liver are bilirubin and biliverdin. Thus, the answer is: **more than one option is correct**.

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