Disease caused by deficiency of parathormone is

Options

A. Cretinism
B. Hypercalcemia
C. Tetany
D. Myxoedema.

Answer

**Step-by-Step Solution:**

1. **Identify the Hormone and Its Source**:
- Parathormone, also known as parathyroid hormone (PTH), is secreted by the parathyroid glands, which are located near the thyroid gland.

2. **Understand the Function of Parathormone**:
- Parathormone plays a crucial role in regulating calcium levels in the blood. It acts on three main organs:
- **Bone**: It promotes bone resorption, releasing calcium into the bloodstream.
- **Gut**: It enhances the absorption of calcium from the digestive tract.
- **Kidney**: It increases calcium reabsorption in the kidneys and decreases calcium excretion.

3. **Consequences of Parathormone Deficiency**:
- A deficiency in parathormone leads to low levels of calcium in the blood, a condition known as hypocalcemia.

4. **Identify the Disease Associated with Hypocalcemia**:
- The primary disease caused by hypocalcemia due to parathormone deficiency is called **tetany**. This condition is characterized by sustained muscle contractions and increased excitability of nerves and muscles.

5. **Conclusion**:
- Therefore, the disease caused by the deficiency of parathormone is **tetany**.

**Final Answer**: The disease caused by deficiency of parathormone is **tetany**.

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