Metabolism is a word that describes all chemical reactions that occur within living Level and understand the effects this might have. Let’s trace the effect of thyroid hormones on metabolism right from the cellular Metabolism involves chemical reactions within the body that support and maintain life. These hormones are alsoĬrucial for the brain to function normally throughout life.įurther, thyroid hormones (thyroxine and triiodothyronine) play a role in metabolism. Of neurons, enhancing the formation of synapses and myelination. Of the brain in the embryonic stage, by promoting the proliferation and differentiation Thyroid hormones (thyroxine and triiodothyronine) are also crucial for the development Secreted by the cells of the skin to heal wounds. For example, epidermal growth factor (EGF) can be Hormone in that they are produced by many cell types in the body that are not Hormonelike activity on cells, but they are distinct from the pituitary growth Promote normal cell growth, division, and differentiation. Stimulates and regulates the production of several important growth factors, which The presence of thyroid hormones (thyroxine and triiodothyronine) Thyroid hormones are important for growth and development of the physical body and in Let’s now investigate the different effects that thyroid hormones can have on theīody and understand why this hormone is so crucial. (TSH), triggering the thyroid gland to release thyroid hormones. The pituitary gland releases thyroid-stimulating hormone This is represented in Figure 4.įigure 4: A diagram showing the regulatory action of the pituitary gland on the thyroid gland. Hormone, or TSH, which travels in the bloodstream to the thyroid gland, triggering TheĪnterior pituitary gland releases an important hormone called the thyroid-stimulating Many of the other glands’ functions, including that of the thyroid gland. You might have heard the pituitary gland, which is located in theīrain, being referred to as the “master gland,” because it controls so The endocrine system work in harmony, sharing chemical signals and maintaining stability Understand how the thyroid gland is stimulated. Approximately, 9 0 % of the hormones produced byīefore we begin learning about the functions of the thyroid hormones, we need to It is very important for the thyroid gland, therefore, that one A large proportion of the T4 produced in the thyroid gland isĬonverted to a more active form called T3 (triiodothyronine) by organs like the liverĪnd other tissues. This is why thyroxine is sometimes called T4, or The chemical structure of a thyroxine moleculeĬontains four atoms of iodine. The follicular cells have pumps that help them take up iodine, which is crucial for the Nutrients, such as iodine, and carries the hormones produced by the gland via theīloodstream to target cells elsewhere in the body. The thyroid gland receives a rich network of blood vessels that provides the important Figure 3: A diagram depicting the thyroid follicular cells that make up the thyroid gland.
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