What hormones does the zona reticularis produce?
Zona reticularis is the innermost cortical layer, and it produces androgens, mainly dehydroepiandrosterone (DHEA), DHEA sulfate (DHEA-S), and androstenedione (the precursor to testosterone) in humans.
What is the effect of zona reticularis?
The zona reticularis is the site of biosynthesis of androgen precursors such as dehydroepiandrosterone (DHEA) and androstenedione from cholesterol. These androgens are released into the bloodstream and transported to gonads where they are converted into testosterone or oestrogen.
Does the zona reticularis secrete estrogen?
Zona reticularis surrounds the medulla and produces the adrenal androgens and small amounts of cortisol and estrogens (24).
What hormone is produced in the zona glomerulosa?
Aldosterone
Aldosterone. This mineralocorticoid hormone produced by the zona glomerulosa plays a central role in regulating blood pressure and certain electrolytes (sodium and potassium).
What is the function of zona glomerulosa?
Aldosterone is synthesized in the zona glomerulosa of the adrenal gland. It regulates electrolyte excretion and intravascular volume mainly through its effects on the distal tubules and cortical collecting ducts of the kidneys in which it acts to increase sodium reabsorption and potassium excretion.
What stimulates the zona glomerulosa?
ACTH is the main stimulus of the zona fasciculata and zona reticularis, stimulating glucocorticoids secretion, while angiotensin II and potassium are the main stimuli of aldosterone secretion by the zona glomerulosa.
What are the 3 zones of the adrenal cortex?
Anatomy of the Adrenal Glands It is divided into three separate zones: zona glomerulosa, zona fasciculata and zona reticularis.
Why is it called zona glomerulosa?
The zona glomerulosa (sometimes, glomerular zone) of the adrenal gland is the most superficial layer of the adrenal cortex, lying directly beneath the renal capsule. Its cells are ovoid and arranged in clusters or arches (glomus is Latin for “ball”)….
| Zona glomerulosa | |
|---|---|
| Layers of cortex. | |
| Details | |
| Identifiers | |
| Latin | Zona |
What kind of hormones does the zona fasciculata produce?
The cells of the zona fasciculata produce hormones called glucocorticoids because of their role in glucose metabolism. The most important of these is cortisol, some of which the liver converts to cortisone. A glucocorticoid produced in much smaller amounts is corticosterone.
Why is the adrenal cortex called the zona fasciculata?
The intermediate region of the adrenal cortex is the zona fasciculata, named as such because the cells form small fascicles (bundles) separated by tiny blood vessels. The cells of the zona fasciculata produce hormones called glucocorticoids because of their role in glucose metabolism.
Where does the zona reticularis produce sex hormones?
The deepest region of the adrenal cortex is the zona reticularis, which produces small amounts of a class of steroid sex hormones called androgens. During puberty and most of adulthood, androgens are produced in the gonads. The androgens produced in the zona reticularis supplement the gonadal androgens.