what are the two hormones that can alter tubular function
What tubular function? Renal function?
What is Anti-diuretic hormone (ADH), Aldosterone, and Atrial natriuretic peptide ?
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What tubular function? Renal function?
What is Anti-diuretic hormone (ADH), Aldosterone, and Atrial natriuretic peptide ?
The two hormones that can alter tubular function are antidiuretic hormone (ADH) and aldosterone.
To understand how these hormones affect tubular function, let's break down the process. ADH, also known as vasopressin, is released by the pituitary gland in response to increased osmolarity or decreased blood volume. Its main function is to regulate water reabsorption in the kidneys. When ADH is released, it binds to receptors in the tubules of the kidneys, specifically the collecting ducts. This causes increased permeability of the collecting ducts to water, allowing for more water to be reabsorbed into the bloodstream. As a result, less water is excreted in urine, leading to concentrated urine.
Aldosterone, on the other hand, is a hormone produced by the adrenal glands, located on top of the kidneys. It is released in response to low blood volume, low blood pressure, or high levels of potassium in the blood. Aldosterone acts on the tubules in the kidneys, primarily the distal convoluted tubule and collecting ducts. Its main role is to increase the reabsorption of sodium and water and promote the excretion of potassium. By increasing sodium and water reabsorption, aldosterone helps to retain water in the body, which helps restore blood volume and blood pressure.
So, to reiterate, antidiuretic hormone (ADH) increases water reabsorption in the kidneys, while aldosterone increases sodium and water reabsorption and promotes potassium excretion. Both of these hormones play crucial roles in regulating fluid balance and electrolyte concentrations in the body.