 Dear students, in this topic we shall discuss Adrenal Glance. Mammals have two adrenal glands. These glands are attached to the upper end of each kidney. The adrenal glands are in fact dual glands. Each gland has two glands in each as an outer layer and an inner layer. The outer layer is known as the adenyl cortex whereas the inner central portion is known as adenyl medulla. These two portions of adenyls have different cell types, different functions and different embryonic origins. The cells of adenyl cortex are true endocrine cells. They are derived from non-neural mesodermal tissue. The cells of medulla are derived from epidermal neural tissue during embryonic development. So both tissues are embryologically different. These medullary cells are functionally related to the sympathetic nervous system. Thus, like pituitary gland, each adrenal gland is a fused gland with endocrine and neuroendocrine glands. Dear students, now we shall discuss the hormones of adenyl cortex. Adenyl cortex produces two major classes of steroid hormones. One are called the glucocorticoids and the others are known as mineralocorticoids. Collectively, these two classes are called cortico steroids. These cortico steroids are involved in iron and glucose regulation in blood. They are also involved in anti-inflammatory reactions. Dear students, adenyl cortex, in two types of steroid hormones, a third group of steroid hormones are also produced, which are steroid sex hormones, which include androgens, astrogens and progesterone. The main source of these hormones are gonads, but they also produce a small amount of adenyl cortex. And the sex hormones produced from here have similar effects, like the gonadal hormones. Dear students, now we shall discuss the hormones produced by adenyl medulla. The adenyl medulla synthesizes and secretes catecholamines, that is epinephrine and nor epinephrine. These hormones are secreted under nervous control and they are released through visceral motor stimulation. Dear students, adenyl medulla's cells are called chromophine cells, which produce catecholamines. These chromophine cells are called chromium salts, which are called chromophine cells. These cells are actually modified post-ganglionic-sympathetic neurons. Chromophine cells produce nor epinephrine and epinephrine. Those cells, which produce nor epinephrine, have dark staining irregular granules. And those chromophine cells, which produce epinephrine, have light staining spherical granules.