They are produced in small amounts by the adrenal cortex in both males and females. These hormones are secreted in response to ACTH and levels are regulated by negative feedback.Īndrogens are sex hormones that promote masculinity.
These hormones increase blood glucose levels to maintain levels within a normal range between meals. The glucocorticoids stimulate the synthesis of glucose and gluconeogenesis (converting a non-carbohydrate to glucose) by liver cells and they promote the release of fatty acids from adipose tissue. The three main glucocorticoids are cortisol, corticosterone, and cortisone. Aldosterone release from the adrenal cortex is stimulated by a decrease in blood concentrations of sodium ions, blood volume, or blood pressure, or by an increase in blood potassium levels. The main mineralocorticoid is aldosterone, which regulates the concentration of Na + ions in urine, sweat, pancreas, and saliva. These layers form three distinct regions: an outer zona glomerulosa that produces mineralocorticoids, a middle zona fasciculata that produces glucocorticoids, and an inner zona reticularis that produces androgens. The adrenal cortex is made up of layers of epithelial cells and associated capillary networks. (credit: modification of work by NCI) Adrenal Cortex The location of the adrenal glands on top of the kidneys is shown. These regions secrete different hormones. The adrenal glands consist of an outer adrenal cortex and an inner adrenal medulla. For additional information visit Linking to and Using Content from MedlinePlus.The adrenal glands are associated with the kidneys one gland is located on top of each kidney as illustrated in Figure. Any duplication or distribution of the information contained herein is strictly prohibited without authorization. Links to other sites are provided for information only - they do not constitute endorsements of those other sites. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. This site complies with the HONcode standard for trustworthy health information: verify here. Learn more about A.D.A.M.'s editorial policy editorial process and privacy policy. is among the first to achieve this important distinction for online health information and services. follows rigorous standards of quality and accountability. is accredited by URAC, for Health Content Provider (URAC's accreditation program is an independent audit to verify that A.D.A.M.
0 kommentar(er)
