Significant role of calcium balance in the body is maintained by

Options

A. PTH and FSH
B. PTH and TCT
C. TCT and FSH
D. TCT and GH

Answer

**Step-by-Step Solution:**

1. **Understanding Calcium Balance**: Calcium balance in the body is crucial for various physiological functions, including muscle contraction, blood clotting, and nerve transmission.

2. **Identifying Key Hormones**: Two primary hormones are responsible for regulating calcium levels in the body:
- **Parathyroid Hormone (PTH)**: Secreted by the parathyroid glands, PTH increases blood calcium levels. It does this by stimulating the release of calcium from bones, increasing calcium absorption in the intestines, and promoting calcium reabsorption in the kidneys.
- **Thyrocalcitonin (TCT)**: Also known as calcitonin, this hormone is secreted by the C cells of the thyroid gland. TCT helps to lower blood calcium levels by inhibiting bone resorption and promoting calcium excretion in the kidneys.

3. **Role of PTH and TCT**: Together, PTH and TCT work in opposition to maintain calcium homeostasis. When calcium levels are low, PTH is released to increase them. Conversely, when calcium levels are high, TCT is released to decrease them.

4. **Conclusion**: The significant role of calcium balance in the body is maintained by the hormones Parathyroid Hormone (PTH) and Thyrocalcitonin (TCT).

**Final Answer**: The significant role of calcium balance in the body is maintained by Parathyroid Hormone (PTH) and Thyrocalcitonin (TCT).

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