0
What else can I help you with?
The portion of the nephron receiving filtrate from the glomerular capsule?
The portion of the nephron receiving filtrate from the glomerular capsule is the proximal convoluted tubule. It is responsible for reabsorbing substances such as glucose, ions, and water from the filtrate into the blood. This process helps regulate the body's balance of electrolytes and fluid volume.
Where are drugs secreted proximal convoluted tubule distal convoluted tubule descending limb or ascending limb?
Previous answer on this page was "distal convoluted tubule". But answerer did not give any justification or references. Commonly-held opinion is that the DCT is the site of tubular drug secretion (e.g. penicillins), however, I've not seen any science to back this up. On the other hand, some recent studies point to drug transport in the proximal convoluted tubule via the OAT (organic anion transporter) family. See for example, Takeda et al. JPET 302:666-671. (http://dx.doi.org/10.1124/jpet.102.034330 has full text) --Dr.Dom
In the proximal convoluted tubule are the Na K pumps located only on the apical sides of the epithelial membranes?
No, Na+K+ pumps are located on both the apical and basolateral sides of the epithelial membranes in the proximal convoluted tubule. This pump helps maintain the concentration gradient of sodium and potassium ions across the tubular walls, which is essential for reabsorption of these ions and water from the tubular fluid.
Do secretion usually occur in the distal convoluted tubule and the collecting tubule?
Secretion typically occurs in the distal convoluted tubule and the collecting tubule of the nephron. These segments of the nephron are responsible for actively transporting substances like ions, drugs, and waste products from the blood into the tubular fluid to be excreted in the urine.
What is the osmolarity of the filtrate at the end of the proximal tubule?
Isotonic- 300 mOsm Per Pearson Yes, the osmolarity of the filtrate would be about 300 mOsm because both solutes and water are reabsorbed in the proximal tubule. As particles are reabsorbed, water follows osmotically.
What are the parts of the proximal tubule?
The parts of the proximal tubule in the nephron are the proximal convoluted tubule (PCT) and the proximal straight tubule (PST). The PCT is the first segment after the Bowman's capsule and is responsible for reabsorbing nutrients, ions, and water. The PST continues the reabsorption process and plays a role in maintaining the body's fluid and electrolyte balance.
What is the correct order of the nephron in order of fluid flow?
The correct order of the nephron in order of fluid flow is: Bowman's capsule, proximal convoluted tubule, loop of Henle (descending and ascending limbs), distal convoluted tubule, and collecting duct.
Which part of the nephron receives fluid from the glomerular capsular space?
The filtrate from Bowman's capsule first travels to the proximal tubule of the nephron.
The portion of the nephron receiving filtrate from the glomerular capsule?
The portion of the nephron receiving filtrate from the glomerular capsule is the proximal convoluted tubule. It is responsible for reabsorbing substances such as glucose, ions, and water from the filtrate into the blood. This process helps regulate the body's balance of electrolytes and fluid volume.
Where are drugs secreted proximal convoluted tubule distal convoluted tubule descending limb or ascending limb?
Previous answer on this page was "distal convoluted tubule". But answerer did not give any justification or references. Commonly-held opinion is that the DCT is the site of tubular drug secretion (e.g. penicillins), however, I've not seen any science to back this up. On the other hand, some recent studies point to drug transport in the proximal convoluted tubule via the OAT (organic anion transporter) family. See for example, Takeda et al. JPET 302:666-671. (http://dx.doi.org/10.1124/jpet.102.034330 has full text) --Dr.Dom
In the proximal convoluted tubule are the Na K pumps located only on the apical sides of the epithelial membranes?
No, Na+K+ pumps are located on both the apical and basolateral sides of the epithelial membranes in the proximal convoluted tubule. This pump helps maintain the concentration gradient of sodium and potassium ions across the tubular walls, which is essential for reabsorption of these ions and water from the tubular fluid.
What are the similarities between the distal tubule and the proximal tubule?
- proximal tubule : • Selective reabsorption of nutrients from filtrate back into blood by active and passive transport. • Within proximal tubule, pH is controlled by secretion of hydrogen ions (H1) and reabsorption of bicarbonate ions (HCO32). - distal tubule • Selective reabsorption of nutrients from blood into nephron by active transport. Distal tubule helps regulate potassium (K1) and salt (NaCl) concentration of body fluids. • As in proximal tubule, pH is controlled by tubular secretion of hydrogen ions (H1) and reabsorption of bicarbonate ions (HCO32).
Where does glucose reabsorption occur in the nephron?
Glucose reabsorption takes place in the proximal renal tubule. This tubule is a portion of the nephron that contains fluid. The functions of the nephron include the reabsorption and secretion of various substances like ions, glucose, and amino acids.
Where is sodium reabsorbed?
Sodium is primarily reabsorbed in the kidneys, specifically in the proximal convoluted tubule and the loop of Henle. It plays a crucial role in maintaining fluid balance and blood pressure in the body.
What does pct reabsorb?
The proximal convoluted tubule (PCT) in the kidney reabsorbs nutrients such as glucose, amino acids, and ions like sodium and chloride. It also reabsorbs water to adjust the body's fluid balance.
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.
Which regions of the nephron function independently of hormonal control for the most part?
The proximal convoluted tubule and the loop of Henle primarily function independently of hormonal control. These regions are responsible for processes like reabsorption and secretion that help maintain electrolyte balance and fluid volume in the body even in the absence of hormonal signals.
