Gull's disease is related to deficient working of

Options

A. Thyroid
B. Parathyroid
C. Adrenal cortex
D. Gonads

Answer

**Step-by-Step Solution:**

1. **Identify Gull's Disease**: Gull's disease is also known as myxoedema. It is important to recognize this term as it relates to the condition we are discussing.

2. **Understand the Cause of Myxoedema**: Myxoedema occurs due to a deficiency in thyroid hormones. This is crucial because it directly links the disease to the thyroid gland.

3. **Review the Function of the Thyroid Gland**: The thyroid gland is responsible for the secretion of thyroxine (T4) and triiodothyronine (T3), which are hormones that regulate metabolism, energy production, and overall growth and development.

4. **Evaluate the Options Provided**: The question provides several options (thyroid, parathyroid, adrenal cortex, and gonads). We need to determine which of these glands is related to the deficiency causing Gull's disease.

5. **Eliminate Incorrect Options**:
- **Parathyroid Gland**: This gland regulates calcium levels in the blood and is not related to thyroid hormone production.
- **Adrenal Cortex**: This part of the adrenal gland produces hormones like cortisol and aldosterone, which are unrelated to thyroid function.
- **Gonads**: These are the sex glands (testes and ovaries) that produce sex hormones and gametes, not thyroid hormones.

6. **Confirm the Correct Answer**: Since myxoedema (Gull's disease) is caused by a deficiency in thyroid hormones, the correct answer is the thyroid gland.

**Final Answer**: Gull's disease is related to the deficient working of the **thyroid gland**.

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