Which one is an accessory excretory organ

Options

A. Liver
B. Stomach
C. Intestine
D. Heart

Answer

**Step-by-Step Solution:**

1. **Understanding Excretory Organs:**
- Excretory organs are those that help in the elimination of waste products from the body.
- They can be classified into primary (major) excretory organs and accessory excretory organs.

2. **Identifying Primary Excretory Organs:**
- In humans, the primary excretory organs are the kidneys, which are directly involved in filtering blood and producing urine.

3. **Understanding Accessory Excretory Organs:**
- Accessory excretory organs are those that assist in the process of excretion but are not directly involved in the elimination of waste.
- Examples include the liver and skin.

4. **Analyzing the Options:**
- The options provided are liver, stomach, intestine, and heart.
- We need to determine which of these is an accessory excretory organ.

5. **Evaluating Each Option:**
- **Liver:**
- The liver plays a crucial role in the metabolism of substances and helps in the formation of urea from ammonia. It also aids in the excretion of degraded cholesterol and drugs. Thus, it is considered an accessory excretory organ.
- **Stomach:**
- The stomach is primarily a digestive organ and does not participate in excretion. Therefore, it is incorrect.
- **Intestine:**
- Similar to the stomach, the intestine is involved in digestion and absorption, not excretion. Hence, it is incorrect.
- **Heart:**
- The heart is part of the circulatory system and does not have a role in excretion. Therefore, it is also incorrect.

6. **Conclusion:**
- The only correct answer among the options provided is the **liver**, which is an accessory excretory organ.

**Final Answer:**
The accessory excretory organ is the **liver**.

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