Which of the following described the nature of parathormone ?

Options

A. Hypercalcemic
B. Hypocalcemic
C. Hyperkalemic
D. Hypokalemic

Answer

**Step-by-Step Solution:**

1. **Understanding Parathormone**: Parathormone, also known as parathyroid hormone (PTH), is a hormone secreted by the parathyroid glands.

2. **Nature of Parathormone**: Parathormone is classified as a peptide hormone. This means it is composed of amino acids and is water-soluble.

3. **Regulation of Parathormone**: The secretion of parathormone is regulated by the levels of calcium ions in the blood. When calcium levels drop, the parathyroid glands release more parathormone.

4. **Function of Parathormone**: The primary function of parathormone is to increase the concentration of calcium in the blood. It does this by promoting the release of calcium from bones, increasing calcium reabsorption in the kidneys, and enhancing the absorption of calcium in the intestines.

5. **Hypercalcemic Effect**: Due to its role in increasing blood calcium levels, parathormone is referred to as a hypercalcemic hormone. This means it raises the calcium levels in the bloodstream.

6. **Conclusion**: Based on the nature and function of parathormone, the correct description of its nature is that it is a hypercalcemic hormone.

**Final Answer**: The correct option is that parathormone is a hypercalcemic hormone.

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