Amount of saliva secreted daily in humans is

Options

A. 250 ml
B. 500 ml
C. 750 ml
D. 1000ml

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the amount of saliva secreted daily in humans.

2. **Importance of Saliva**: Saliva plays a crucial role in the digestion process, particularly in the breakdown of starch.

3. **Salivary Glands**: There are three main glands responsible for saliva secretion:
- **Parotid Gland**: Located near the ear, it produces a significant amount of saliva.
- **Submandibular Gland**: Located beneath the jaw, it also contributes to saliva production.
- **Sublingual Gland**: Located under the tongue, it produces a smaller amount of saliva compared to the other two glands.

4. **Daily Saliva Production**: According to various sources, the amount of saliva secreted daily can vary. However, the standard reference from NCERT states that humans secrete approximately **1000 ml (or 1 liter)** of saliva per day.

5. **Evaluating Options**: The options provided are:
- A) 250 ml
- B) 500 ml
- C) 750 ml
- D) 1000 ml

Based on our understanding, the correct answer is **D) 1000 ml** as it aligns with the information provided by NCERT.

6. **Conclusion**: Therefore, the amount of saliva secreted daily in humans is **1000 ml**.

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