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What does aldostrone cause?
Aldosterone is a hormone that increases the reabsorption of sodium ions and water and the release (secretion) of potassium ions in the distal convoluted tubules of the kidneys. This increases blood volume and, therefore, increases blood pressure. Drugs that interfere with the secretion or action of aldosterone are in use as antihypertensives.
Where is the aldostrone be secreted?
Aldosterone is secreted by the adrenal glands, specifically by the outer layer called the adrenal cortex. It plays a key role in regulating the balance of electrolytes and fluid in the body by acting on the kidneys to reabsorb sodium and water while excreting potassium.
What hormones are stimulated by other hormones?
Almost every hormone effects another in some way. That is how our body maintains homeostasis. Mostly this is done through negative feedback loops, one hormone does it's function until another system releases a counteracting hormone. There is no short answer for this, endocrinology is an entire science of these interactions, but likely the most commonly heard (and constantly in action) are the RAA system or Renin Angioensin Aldostrone system. Renin tells your body it needs to hydrate so thirst is stimulated (a whole oher system) and Aldosterone is produced to trade ions of sodium for potassium. Sodium then attracts water fom the cells and extra cellular space to increase vascular volume. Angiotensin tells the arteries to contract to increase blood pressure (also through a cascade of reactions including angiotensin I, II, and III). Angiotensin is also what some blood pressure medications (ACE inhibitors) work on. When there is suffient vascular volume the negative feedback is from the arteries to begin allowing sodium to be excreted. Disease of the system is seen as SIADH (usually head injury damages Angiotensin II receptors in medulla) od Diabetis Insipidus (inability to maintain fluid electrolyte balance through constant diuresis {peeing}).
