Small amount of nitrogenous wastes found in the following

Options

A. Gastric juice
B. Saliva
C. Urine
D. Intestinal juice

Answer

**Step-by-Step Solution:**

1. **Understanding Nitrogenous Wastes**: Nitrogenous wastes are byproducts of protein metabolism and include substances like ammonia, urea, and uric acid. In humans, urea is the primary nitrogenous waste excreted.

2. **Analyzing the Options**:
- **Gastric Juice**: This is composed mainly of hydrochloric acid (HCl), pepsin, and lipase. It is involved in digestion but does not produce nitrogenous wastes.
- **Saliva**: Saliva contains electrolytes and enzymes. It plays a role in the deamination of amino acids, which can produce small amounts of nitrogenous waste, specifically urea.
- **Urine**: Urine is a major excretory product that contains high concentrations of nitrogenous wastes, including urea and uric acid, thus not a small amount.
- **Intestinal Juice**: This juice aids in digestion in the small intestine and does not produce nitrogenous wastes.

3. **Conclusion**: The only option that indicates the presence of a small amount of nitrogenous waste is saliva, as it can release urea during the deamination of amino acids.

4. **Final Answer**: The small amount of nitrogenous waste is found in **saliva**.

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