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# Thyroid Hormone Regulation The image shows the regulation of thyroid hormones. It depicts the communication between the hypothalamus, pituitary gland, and thyroid gland. * **Hypothalamus** releases **Thyroid Releasing Hormone (TRH)** which stimulates the pituitary gland. * **Pituitary Gland** re...

# Thyroid Hormone Regulation The image shows the regulation of thyroid hormones. It depicts the communication between the hypothalamus, pituitary gland, and thyroid gland. * **Hypothalamus** releases **Thyroid Releasing Hormone (TRH)** which stimulates the pituitary gland. * **Pituitary Gland** releases **Thyroid Stimulating Hormone (TSH)** which stimulates the thyroid glands. * **Thyroid Gland** produces **Thyroid Hormone (T3 and T4)** and **Calcitonin**. * **T3 and T4** are the active thyroid hormones. * **Calcitonin** is involved in calcium regulation. The image shows the **feedback loop** mechanism where rising levels of thyroid hormones in the bloodstream inhibit the release of TRH and TSH. This mechanism helps maintain the correct level of thyroid hormones in the body.