Along with which hormone parathyroid hormone plays a significant role in Ca-balance in the body ?

Options

A. T3
B. T4
C. TCT
D. LAA

Answer

**Step-by-Step Solution:**

1. **Understanding the Role of Parathyroid Hormone (PTH):**
- Parathyroid hormone (PTH) is secreted by the parathyroid glands and plays a crucial role in regulating calcium levels in the blood. It primarily works to increase blood calcium levels when they are low.

2. **Identifying the Hormone that Works Oppositely:**
- To maintain calcium balance in the body, there needs to be a hormone that counteracts the effects of PTH. This hormone is responsible for lowering blood calcium levels.

3. **Recognizing Calcitonin:**
- The hormone that decreases blood calcium levels is calcitonin. Calcitonin is produced by the parafollicular cells (C cells) of the thyroid gland. It acts to lower blood calcium levels, especially during conditions of hypercalcemia.

4. **Conclusion:**
- Therefore, the hormone that works alongside parathyroid hormone (PTH) to maintain calcium balance in the body is calcitonin (also referred to as thyrocalcitonin or TCT).

**Final Answer:**
Calcitonin (TCT) is the hormone that plays a significant role alongside parathyroid hormone in calcium balance in the body.

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