286359
We can produce a concentrated/dilute urine. This is special mechanism. Identify the mechanism.
1 Reabsorption from PCT
2 Reabsorption from collecting duct
3 Reabsorption/Secretion in DCT
4 Counter current mechanism in Henle's loop/vasa recta
Explanation:
(d) Counter current mechanism in Henle's loop and vasa recta helps to maintain concentration gradient in the medullary interstitum. Presence of such interstitial gradient helps an easy passage of water from the collecting tubule thereby concentrating the urine.
PCT helps in maintaining $\text{pH}$ and ionic balance of the body fluid by the secretion of ${{\text{H}}^{+}}$, ammonia and potassium ions and reabsorbing $70-80\text{ }\!\!%\!\!\text{ }$ of electrolytes and water.
Collecting duct helps in reabsorption of water to produce concentrated urine and in maintaining osmolarity. It also plays a vital role in maintaining $\text{pH}$ and ionic balance in blood by secreting ${{\text{H}}^{+}}$and ${{\text{K}}^{+}}$ions. DCT reabsorbs $\text{N}{{\text{a}}^{+}}$and water along with $\text{HCO}_{3}^{-}$, maintaining $\text{pH}$ and sodium-potassium/ionic balance in blood by selectively secreting hydrogen and potassium ions.
NCERT Page-296 / N-211
Excretory Products and Their Elimination(NCERT)
286360
Which of the following statement is correct?
1 Mammals have the ability to produce a concentrated urine.
2 The flow of filtrate in the two limbs of Henle's loop is in same directions.
3 $\text{NaCl}$ is transported by the descending limbs
4 None of them
Explanation:
(a) Only option (a) is correct. Option b, and c, have incorrect statement.
NCERT Page-295 / N-210
Excretory Products and Their Elimination(NCERT)
286361
A patient was diagnosed that one process of his excretory system was not functioning properly due to which his urine is not concentrating.
Identify the organ of the excretory system on which concentration of urine depends.
1 Collecting duct
2 Bowman's capsule
3 Henle's loop and vasa recta
4 Proximal convoluted tubules
Explanation:
(c) Concentration of urine depends upon the length of Henle's loop. Loop of Henle is the hairpin shaped section of a kidney tubule situated between the proximal
and distal tubules in the nephron. It consists of a thin descending limb which is permeable to water and a thick ascending limb which is impermeable to water complex movements of ions and water across the walls of the loop enable it to function as a countercurrent multiplier, resulting in the production of concentrated urine in the collecting duct.
NCERT Page-295 / N-210
Excretory Products and Their Elimination(NCERT)
286362
If Henle's loop were absent from mammalian nephron which of the following is to be expected
1 there will be no urine formation
2 there will be hardly any change in the quality and quantity of urine formed
3 the urine will be more concentrated
4 the urine will be more dilute.
Explanation:
(d) Henle's loop is responsible for the reabsorption of water and sodium chloride from the urine. Hence, in the absence of Henle's loop the urine will become more dilute.
286359
We can produce a concentrated/dilute urine. This is special mechanism. Identify the mechanism.
1 Reabsorption from PCT
2 Reabsorption from collecting duct
3 Reabsorption/Secretion in DCT
4 Counter current mechanism in Henle's loop/vasa recta
Explanation:
(d) Counter current mechanism in Henle's loop and vasa recta helps to maintain concentration gradient in the medullary interstitum. Presence of such interstitial gradient helps an easy passage of water from the collecting tubule thereby concentrating the urine.
PCT helps in maintaining $\text{pH}$ and ionic balance of the body fluid by the secretion of ${{\text{H}}^{+}}$, ammonia and potassium ions and reabsorbing $70-80\text{ }\!\!%\!\!\text{ }$ of electrolytes and water.
Collecting duct helps in reabsorption of water to produce concentrated urine and in maintaining osmolarity. It also plays a vital role in maintaining $\text{pH}$ and ionic balance in blood by secreting ${{\text{H}}^{+}}$and ${{\text{K}}^{+}}$ions. DCT reabsorbs $\text{N}{{\text{a}}^{+}}$and water along with $\text{HCO}_{3}^{-}$, maintaining $\text{pH}$ and sodium-potassium/ionic balance in blood by selectively secreting hydrogen and potassium ions.
NCERT Page-296 / N-211
Excretory Products and Their Elimination(NCERT)
286360
Which of the following statement is correct?
1 Mammals have the ability to produce a concentrated urine.
2 The flow of filtrate in the two limbs of Henle's loop is in same directions.
3 $\text{NaCl}$ is transported by the descending limbs
4 None of them
Explanation:
(a) Only option (a) is correct. Option b, and c, have incorrect statement.
NCERT Page-295 / N-210
Excretory Products and Their Elimination(NCERT)
286361
A patient was diagnosed that one process of his excretory system was not functioning properly due to which his urine is not concentrating.
Identify the organ of the excretory system on which concentration of urine depends.
1 Collecting duct
2 Bowman's capsule
3 Henle's loop and vasa recta
4 Proximal convoluted tubules
Explanation:
(c) Concentration of urine depends upon the length of Henle's loop. Loop of Henle is the hairpin shaped section of a kidney tubule situated between the proximal
and distal tubules in the nephron. It consists of a thin descending limb which is permeable to water and a thick ascending limb which is impermeable to water complex movements of ions and water across the walls of the loop enable it to function as a countercurrent multiplier, resulting in the production of concentrated urine in the collecting duct.
NCERT Page-295 / N-210
Excretory Products and Their Elimination(NCERT)
286362
If Henle's loop were absent from mammalian nephron which of the following is to be expected
1 there will be no urine formation
2 there will be hardly any change in the quality and quantity of urine formed
3 the urine will be more concentrated
4 the urine will be more dilute.
Explanation:
(d) Henle's loop is responsible for the reabsorption of water and sodium chloride from the urine. Hence, in the absence of Henle's loop the urine will become more dilute.
286359
We can produce a concentrated/dilute urine. This is special mechanism. Identify the mechanism.
1 Reabsorption from PCT
2 Reabsorption from collecting duct
3 Reabsorption/Secretion in DCT
4 Counter current mechanism in Henle's loop/vasa recta
Explanation:
(d) Counter current mechanism in Henle's loop and vasa recta helps to maintain concentration gradient in the medullary interstitum. Presence of such interstitial gradient helps an easy passage of water from the collecting tubule thereby concentrating the urine.
PCT helps in maintaining $\text{pH}$ and ionic balance of the body fluid by the secretion of ${{\text{H}}^{+}}$, ammonia and potassium ions and reabsorbing $70-80\text{ }\!\!%\!\!\text{ }$ of electrolytes and water.
Collecting duct helps in reabsorption of water to produce concentrated urine and in maintaining osmolarity. It also plays a vital role in maintaining $\text{pH}$ and ionic balance in blood by secreting ${{\text{H}}^{+}}$and ${{\text{K}}^{+}}$ions. DCT reabsorbs $\text{N}{{\text{a}}^{+}}$and water along with $\text{HCO}_{3}^{-}$, maintaining $\text{pH}$ and sodium-potassium/ionic balance in blood by selectively secreting hydrogen and potassium ions.
NCERT Page-296 / N-211
Excretory Products and Their Elimination(NCERT)
286360
Which of the following statement is correct?
1 Mammals have the ability to produce a concentrated urine.
2 The flow of filtrate in the two limbs of Henle's loop is in same directions.
3 $\text{NaCl}$ is transported by the descending limbs
4 None of them
Explanation:
(a) Only option (a) is correct. Option b, and c, have incorrect statement.
NCERT Page-295 / N-210
Excretory Products and Their Elimination(NCERT)
286361
A patient was diagnosed that one process of his excretory system was not functioning properly due to which his urine is not concentrating.
Identify the organ of the excretory system on which concentration of urine depends.
1 Collecting duct
2 Bowman's capsule
3 Henle's loop and vasa recta
4 Proximal convoluted tubules
Explanation:
(c) Concentration of urine depends upon the length of Henle's loop. Loop of Henle is the hairpin shaped section of a kidney tubule situated between the proximal
and distal tubules in the nephron. It consists of a thin descending limb which is permeable to water and a thick ascending limb which is impermeable to water complex movements of ions and water across the walls of the loop enable it to function as a countercurrent multiplier, resulting in the production of concentrated urine in the collecting duct.
NCERT Page-295 / N-210
Excretory Products and Their Elimination(NCERT)
286362
If Henle's loop were absent from mammalian nephron which of the following is to be expected
1 there will be no urine formation
2 there will be hardly any change in the quality and quantity of urine formed
3 the urine will be more concentrated
4 the urine will be more dilute.
Explanation:
(d) Henle's loop is responsible for the reabsorption of water and sodium chloride from the urine. Hence, in the absence of Henle's loop the urine will become more dilute.
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Excretory Products and Their Elimination(NCERT)
286359
We can produce a concentrated/dilute urine. This is special mechanism. Identify the mechanism.
1 Reabsorption from PCT
2 Reabsorption from collecting duct
3 Reabsorption/Secretion in DCT
4 Counter current mechanism in Henle's loop/vasa recta
Explanation:
(d) Counter current mechanism in Henle's loop and vasa recta helps to maintain concentration gradient in the medullary interstitum. Presence of such interstitial gradient helps an easy passage of water from the collecting tubule thereby concentrating the urine.
PCT helps in maintaining $\text{pH}$ and ionic balance of the body fluid by the secretion of ${{\text{H}}^{+}}$, ammonia and potassium ions and reabsorbing $70-80\text{ }\!\!%\!\!\text{ }$ of electrolytes and water.
Collecting duct helps in reabsorption of water to produce concentrated urine and in maintaining osmolarity. It also plays a vital role in maintaining $\text{pH}$ and ionic balance in blood by secreting ${{\text{H}}^{+}}$and ${{\text{K}}^{+}}$ions. DCT reabsorbs $\text{N}{{\text{a}}^{+}}$and water along with $\text{HCO}_{3}^{-}$, maintaining $\text{pH}$ and sodium-potassium/ionic balance in blood by selectively secreting hydrogen and potassium ions.
NCERT Page-296 / N-211
Excretory Products and Their Elimination(NCERT)
286360
Which of the following statement is correct?
1 Mammals have the ability to produce a concentrated urine.
2 The flow of filtrate in the two limbs of Henle's loop is in same directions.
3 $\text{NaCl}$ is transported by the descending limbs
4 None of them
Explanation:
(a) Only option (a) is correct. Option b, and c, have incorrect statement.
NCERT Page-295 / N-210
Excretory Products and Their Elimination(NCERT)
286361
A patient was diagnosed that one process of his excretory system was not functioning properly due to which his urine is not concentrating.
Identify the organ of the excretory system on which concentration of urine depends.
1 Collecting duct
2 Bowman's capsule
3 Henle's loop and vasa recta
4 Proximal convoluted tubules
Explanation:
(c) Concentration of urine depends upon the length of Henle's loop. Loop of Henle is the hairpin shaped section of a kidney tubule situated between the proximal
and distal tubules in the nephron. It consists of a thin descending limb which is permeable to water and a thick ascending limb which is impermeable to water complex movements of ions and water across the walls of the loop enable it to function as a countercurrent multiplier, resulting in the production of concentrated urine in the collecting duct.
NCERT Page-295 / N-210
Excretory Products and Their Elimination(NCERT)
286362
If Henle's loop were absent from mammalian nephron which of the following is to be expected
1 there will be no urine formation
2 there will be hardly any change in the quality and quantity of urine formed
3 the urine will be more concentrated
4 the urine will be more dilute.
Explanation:
(d) Henle's loop is responsible for the reabsorption of water and sodium chloride from the urine. Hence, in the absence of Henle's loop the urine will become more dilute.