The first of these regions produces the steroid aldosterone, while another steroid hormone, cortisol, is produced by the other two regions. Is known now to have three distinct regions: the zona glomerulosa, zone fasciculata, and zona reticularis. Fifty years later, a Guy's Hospital physician, Thomas Addison, showed that the adrenal glands were necessary for life, by identifying them as the site of damage in a previously mysterious and ultimately fatal illness, which became known as Addison's disease. Their presence was recognized as early as the late sixteenth century, but it was not until 1805 that Cuvier reported that the adrenal was made up of two regions, the cortex on the outside and an inner medulla. They are pyramidal in shape and weigh about 4 g each. Adrenal glands There are two adrenal glands, one sitting on top of each of the kidneys.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |