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ADH is a hormone secreted by the posterior lobe of the pituitary gland, in the brain. ADH travels in the blood to its target organ, the kidney, where it combines with complementary receptors on the surface of the plasma membranes of cuboidal epithelial cells making up the wall of the collecting ducts of nephron.
This stimulates a series of enzyme controlled reactions, resulting in production of an active phosphorylase enzyme which causes vesicles which have plasma membranes posessing a large number of water permeable channels, to move across the cell and fuse with the cell's plasma membrane.
As a result of these water permeable channels, the walls of the collecting duct are more permeable, and water can move out of the lumen of the collecting duct by osmosis down a water potential gradient (this gradient is created by active pumping of inorganic ions into the medulla by the loop of Henle) and is reabsorbed into the blood. As a result, the urine will be more concentrated and have less water, and the organism will consequently conserve more water.
If an organism is dehydrated or has done lots of exercise and has been sweating, the osmoreceptors in the hypothalamus detect the change in water potential, and ADH is secreted from the posterior lobe of the pituitary gland, so water is conserved as described above. If the organism has drank a lot of water, this is also detected and no ADH is produced - the hormone operates on a system of negative feedback.
What else can I help you with?
What is the target organ of ADH?
Kidney.
Kidney function is influenced by which hormone?
ADH
What is the roleof ADH in thebody's waterbalance?
ADH causes the body (kidney) to conserve water and produce more concentrated urine
How adh causes changes in the kidney tuble?
ADH, or antidiuretic hormone, works in the kidney tubule by increasing its permeability to water. This allows the kidney to reabsorb more water from the urine, leading to concentrated urine production. As a result, ADH helps regulate the body's water balance by controlling how much water is excreted in the urine.
What is the role of ADH in the body’s water balance?
ADH causes the body (kidney) to conserve water and produce more concentrated urine
What is the role of ADH in the body's water balance?
ADH causes the body (kidney) to conserve water and produce more concentrated urine
How does ADH get from the pituitary gland to the kidney?
by licking mah wet pussay
What tells the kidney how much water to re-absorb?
Antidiuretic hormone ADH
A hormone secreted from the pituitary that causes kidney to reabsorb water?
Anti-diuretic hormone (or ADH) is released by the pituitary gland to encourage the kidneys to reabsorb water.
What organ tells the kidney how much water to reabsorb?
The hypothalamus in the brain sends signals to the pituitary gland to release antidiuretic hormone (ADH) in response to changes in blood concentration. ADH then signals the kidney to reabsorb water, helping regulate the body's fluid balance.
What are three hormones that can regulate kidney function?
ADH, Aldosterone and Atrial Natriuretic peptide(ANP)
What is ADH and where is it produced?
ADH stands for Antidiuretic hormone. It is a hormone produced by the part of the brain called hypothalamus. It acts as the controller for kidney to release the amount of water that is excreted in the urine.
