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What acts on the distal convoluted tubules and collecting ducts?
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Distal convoluted tubules flow directly into what structures?
The structures that distal tubes flow into are the collecting ducts of the kidneys. The collecting ducts are small tubes through which urine flows into the renal pelvis.
Is the distal tubule and collecting ducts relatively impermeable due to water in the absence of hormones?
In the absence of hormones, the distal tubule and collecting ducts are relatively impermeable to water. True
Which part of the nephron is under the control of the hormones ADH and aldosterone?
ADH increases water reabsorption in the collecting ducts Aldosterone works on the distal convoluted tubule and leads to increased blood pressure.
Where in the kidneys does the filtering takes place?
Within the nephron (the functional unit of the kidneys), filtration occurs in the glomerolus. The filtered fluid is called filtrate. Reabsorption of filtrate occurs in a few places within the nephron, however, the majority of reabsorption takes place in the proximal convoluted tube. It is important to mention that additional reabsorption occurs in the Loop of Henle, distal convoluted tube, and the collecting ducts as well. Again, however, MOST reabsorption of filtrate from the glomerolus takes place in the proximal convoluted tube of the nephron.
What makes collecting ducts permeable to water?
yes
Distal convoluted tubules flow directly into what structures?
The structures that distal tubes flow into are the collecting ducts of the kidneys. The collecting ducts are small tubes through which urine flows into the renal pelvis.
What is the medical term meaning portion of a nephron that is active in filtering urine?
The Proximal convoluted tubules, descending loop , ascending loop of henle and the distal convoluted tubules. Though the collecting ducts determine the final concentration of urine, an author states that it's not a part of the nephron.
The filtrate within the nephron becomes urine only when it passes through the distal convoluted tubules and enters the collecting ducts?
False
How is urea reabsorbed?
40-50 % of filtered urea is reabsorbed through passive diffusion in the Proximal Convoluted Tubules. Loop of Henle, Distal Convoluted Tubules and Cortical Collecting Ducts are impermeable to urea. But secretion of urea happens in descending Loop of Henle (This helps to maintain the osmotic gradient in the medulla of the Kidney). There is also re-absorption of urea in the medullary collecting ducts.
Does diuretics work on the collecting ducts?
Diuretics work in the region of the collecting ducts, but on the ducts themselves. They inhibit ADH from causing water to be reabsorbed in the distal tubules and that produces more urine output.
Where does secretion occur?
Tubular secretion occurs in the distal convoluted tubes. The secretion also happens in the collecting ducts and also in the proximal convoluted tubule.
What is the portion of the nephron that empties into the collecting duct?
The distal convoluted tubule is the portion of the nephron that empties into the collecting ducts. It is the last segment of the nephron.
In the kidney where does most secretion occur?
Tubular secretion occurs in the distal convoluted tubes. The secretion also happens in the collecting ducts and also in the proximal convoluted tubule.
Where does ADH act on the nephron?
collecting duct (system) and late distal tubule
Where is the primary site at which tubular secretion occur?
Tubular secretion is a part of urine formation occurring within the nephrons of the kidneys. After glomerular filtration, in which fluids from the blood pass into the glomerular capsule of the renal tubule, the filtrate is subject to tubular reabsorption and tubular secretion within the convoluted tubules and collecting ducts of the nephrons.
Renal pyramids are?
collecting ducts and uriniferous tubules
Is the distal tubule and collecting ducts relatively impermeable due to water in the absence of hormones?
In the absence of hormones, the distal tubule and collecting ducts are relatively impermeable to water. True
