Introduction The thyroid gland produces two different hormones, thyroxine (T4) and triiodothyronine (T3). The synthesis and release of these hormones is regulated by the hypothalamus and pituitary gland. Their main purpose is to increase the energy metabolism. The thyroid gland produces the hormones T3 and T4 on the one hand and calcitonin on the other. … Thyroid hormones
Transport in blood Both thyroxine (T4) and triiodothyronine (T3) are 99% bound to the thyroxine-binding globulin (TBG) in the blood. This serves to transport the hormones and prevents an early effect of T3. Only about 0.03% T4 and 0.3% T3 are present in the blood unbound and therefore biologically active. The half-life of unbound T4 … Transport in blood | Thyroid hormones
Complaints under a thyroid hormone disorder According to the functions described above: An underfunctioning of the thyroid gland (hypothyroidism), as occurs for example in the case of iodine deficiency, leads accordingly to opposite symptoms: The causes of these diseases are very different and can be congenital, autoimmune (Graves’ disease) or caused by a tumor. The … Complaints under a thyroid hormone disorder | Thyroid hormones
Summary The thyroid gland produces two important thyroid hormones, the biologically largely ineffective thyroxine (T4) and the effective triiodothyronine (T3). They are synthesized in the thyroid cells with the help of iodine and are released from the thyroid follicles as required. The effective T3 is released directly from the thyroid gland in much lower concentrations, … Summary | Thyroid hormones
Formation of T3T4: These thyroid hormones are formed in the thyroid gland, or more precisely in its follicles (roundish structures of cells), from the amino acid thyrosine. There are two types of hormones known as thyroid hormones. T4 hormones occur in the blood about 40 times more than T3 hormones, but T3 acts faster and … T3 – T4 – Hormones
Definition Hormones are messenger substances that are produced in glands or specialized cells of the body. Hormones are used to transmit information to control metabolism and organ functions, whereby each type of hormone is assigned a suitable receptor on a target organ. To reach this target organ, hormones are usually released into the blood (endocrine). … Hormones
Tasks of hormones Hormones are messenger substances of the body. They are produced by various organs (for example thyroid, adrenal gland, testicles or ovaries) and released into the blood. In this way they are distributed to all areas of the body. The different cells of our organism have different receptors to which special hormones can … Tasks of hormones | Hormones
Thyroid hormones The thyroid gland has the task of producing hormones from various amino acids (protein building blocks) and the trace element iodine. These have a variety of effects on the body and are particularly necessary for a normal course of growth, development and metabolism. Thyroid hormones have an influence on almost all cells of … Thyroid hormones | Hormones
Hormones of the adrenal gland The adrenal glands are two small, hormone-producing organs (so-called endocrine organs), which owe their name to their location next to the right or left kidney. There, various messenger substances with different functions for the body are produced and released into the blood. An important type of hormone is the so-called … Hormones of the adrenal gland | Hormones
Hormone-related diseases In principle, disorders of hormone metabolism can affect any hormone gland. These disorders are called endocrinopathies and are usually manifested as over- or underfunction of the endocrine gland for a variety of reasons. As a result of the functional disorder, hormone production increases or decreases, which in turn is responsible for the development … Hormone-related diseases | Hormones
Introduction Among the hormones of the pancreas are the following: Insulin Glucagon Somatostatin (SIH) Education Education: The hormones of the pancreas are produced in the so-called Langerhans cells, whereby three different types are known: In the alpha cells the hormone glucagon is produced, in the beta cells insulin and in the delta cells somatostatin (SIH), … Hormones of the pancreas
Formation of glucocorticoids These hormones of the adrenal cortex include glococorticoid, cortisol and cortisone. The hormones are formed from cholesterol via pregnenolone and progesterone as well as other intermediate stages. After release into the bloodstream, they are bound to the transport protein transcortin. The hormone receptors are located intracellularly in the cells of almost all … Glucocorticoids
