The absence of thyroxin hormone results in goitre. Which endocrine gland secretes thyroxin?

Options

A. Testes
B. Ovaries
C. Thyroid
D. Pancreas

Answer

To answer the question "Which endocrine gland secretes thyroxin?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question states that the absence of the thyroxin hormone results in goitre. We need to identify which endocrine gland produces thyroxin.

2. **Identify the Hormone**: Thyroxin is a hormone that plays a crucial role in regulating metabolism, growth, and development. Its deficiency leads to the enlargement of the thyroid gland, known as goitre.

3. **Know the Endocrine Glands**: The main endocrine glands include:
- Testes (produce testosterone)
- Ovaries (produce estrogen and progesterone)
- Thyroid gland (produces thyroxin)
- Pancreas (produces insulin)

4. **Analyze the Options**:
- **Testes**: Secretes testosterone, not thyroxin.
- **Ovaries**: Secretes estrogen and progesterone, not thyroxin.
- **Thyroid Gland**: This gland is responsible for producing thyroxin.
- **Pancreas**: Secretes insulin, not thyroxin.

5. **Conclusion**: Based on the analysis, the correct answer is that the **Thyroid gland** secretes thyroxin.

### Final Answer:
The endocrine gland that secretes thyroxin is the **Thyroid gland**.

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