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Antidiuretic hormone (ADH), also known as vasopressin, primarily acts on the distal convoluted tubule (DCT) and the collecting ducts of the nephron. In these regions, ADH increases the permeability of the tubule walls to water by promoting the insertion of aquaporin-2 channels into the apical membrane of the tubular cells. This process enhances water reabsorption, allowing the body to conserve water and produce concentrated urine. Consequently, elevated ADH levels lead to reduced urine output and increased blood volume.
What else can I help you with?
Is the distal tubule and collecting ducts relatively impermeable due to water in the absence of hormones?
No, the distal tubule and collecting ducts are not impermeable to water in the absence of hormones. These segments of the nephron regulate water reabsorption based on hormonal signals, particularly antidiuretic hormone (ADH). When ADH is present, water channels called aquaporins are inserted into the tubule walls, allowing for increased water reabsorption.
Which part of the nephron is under the control of the hormones ADH and aldosterone?
The distal tubule and collecting duct are the parts of the nephron that are under the control of the hormones ADH (antidiuretic hormone) and aldosterone. These hormones regulate water reabsorption and sodium reabsorption, respectively, in these segments of the nephron.
The hormone ADH functions to promote water re-abdsorption through the wall of what in the kidney?
ADH promotes water reabsorption through the wall of the collecting duct in the kidney by increasing the permeability of the duct to water. This helps regulate water balance in the body by allowing the reabsorption of water into the bloodstream.
Function of distal tubule?
The distal tubule in the nephron plays a key role in fine-tuning the electrolyte balance and acid-base regulation by reabsorbing sodium, chloride, and calcium ions while secreting potassium and hydrogen ions. It helps regulate blood pressure by responding to hormonal signals like aldosterone and ADH to adjust water and electrolyte balance in the body.
Is the distal convoluted tubule more permeable to water than solutes?
No, The DCT is impermeable to water. Solutes (Na and Cl) are absorbed from the DCT. As a consequence the osmolality of tubular fluid DECREASES as it moves through the distal convoluted tubule, from ~100mOsm/L at it exits the ascending limb of the loop of Henle to around 70mOsm/L as it enters the collecting duct.
Where does ADH act on the nephron?
collecting duct (system) and late distal tubule
What is the roleof anti-diuretichormone (ADH)in the body?
ADH makes the collecting duct & distal convoluted tubule of the nephron more permeable to water
What is the role of anti diuretichormone (ADH) in the body?
ADH makes the collecting duct & distal convoluted tubule of the nephron more permeable to water
What is the role of anti-diuretic hormone (ADH) in the body?
ADH makes the collecting duct & distal convoluted tubule of the nephron more permeable to water
Is the distal tubule and collecting ducts relatively impermeable due to water in the absence of hormones?
No, the distal tubule and collecting ducts are not impermeable to water in the absence of hormones. These segments of the nephron regulate water reabsorption based on hormonal signals, particularly antidiuretic hormone (ADH). When ADH is present, water channels called aquaporins are inserted into the tubule walls, allowing for increased water reabsorption.
Which part of the nephron is under the control of the hormones ADH and aldosterone?
The distal tubule and collecting duct are the parts of the nephron that are under the control of the hormones ADH (antidiuretic hormone) and aldosterone. These hormones regulate water reabsorption and sodium reabsorption, respectively, in these segments of the nephron.
What are the functions of the distal convoluted tubule in urine production?
absorption of more Na+ (if aldosterone present) and absorption of more water (if ADH is present)
When ADH binds to receptor sites on distal tubule cells?
When ADH binds to receptor sites on distal tubule cells in the kidneys, it increases the water permeability of the tubules, allowing them to reabsorb more water from the urine. As a result, less water is excreted, leading to concentrated urine production and helping to regulate the body's water balance.
The hormone ADH functions to promote water re-abdsorption through the wall of what in the kidney?
ADH promotes water reabsorption through the wall of the collecting duct in the kidney by increasing the permeability of the duct to water. This helps regulate water balance in the body by allowing the reabsorption of water into the bloodstream.
Function of distal tubule?
The distal tubule in the nephron plays a key role in fine-tuning the electrolyte balance and acid-base regulation by reabsorbing sodium, chloride, and calcium ions while secreting potassium and hydrogen ions. It helps regulate blood pressure by responding to hormonal signals like aldosterone and ADH to adjust water and electrolyte balance in the body.
Is the distal convoluted tubule more permeable to water than solutes?
No, The DCT is impermeable to water. Solutes (Na and Cl) are absorbed from the DCT. As a consequence the osmolality of tubular fluid DECREASES as it moves through the distal convoluted tubule, from ~100mOsm/L at it exits the ascending limb of the loop of Henle to around 70mOsm/L as it enters the collecting duct.
Premeability to water is regulated by ADH in this structure?
Permeability to water is regulated by antidiuretic hormone (ADH) in the collecting ducts of the kidney. ADH acts on the collecting ducts to increase water reabsorption, resulting in concentrated urine production if ADH levels are high, and dilute urine production if ADH levels are low.
