Name the hormone which stimulates the synthesis and secretion of thyroid hormones from the thyroid gland.

Answer

**Step-by-Step Text Solution:**

1. **Identify the Question**: The question asks for the name of the hormone that stimulates the synthesis and secretion of thyroid hormones from the thyroid gland.

2. **Understand the Function of Hormones**: Hormones are chemical messengers in the body that regulate various physiological processes. In this case, we are focusing on hormones related to the thyroid gland.

3. **Identify the Relevant Hormone**: The hormone responsible for stimulating the thyroid gland is known as Thyroid Stimulating Hormone (TSH).

4. **Explain the Role of TSH**: TSH is produced by the anterior pituitary gland and it stimulates the thyroid gland to synthesize and secrete thyroid hormones, specifically thyroxine (T4) and triiodothyronine (T3).

5. **Discuss the Implications of TSH Levels**: If TSH levels are higher than normal, it can indicate that the thyroid gland is underactive, leading to a condition called hypothyroidism. This condition can cause symptoms such as fatigue, weight gain, and sensitivity to cold.

6. **Conclusion**: Therefore, the hormone that stimulates the synthesis and secretion of thyroid hormones from the thyroid gland is Thyroid Stimulating Hormone (TSH).

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