286331
Which of the following factors is responsible for the formation of concentrated urine?
1 Low levels of antidiuretic hormone.
2 Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys.
3 Secretion of erythropoietin by juxtaglomerular complex.
4 Hydrostatic pressure during glomerular filtration.
Explanation:
(d) The proximal convoluted tubule is the site whereby selective reabsorption occurs, restoring the level of metabolities in the tubule and prevents excessive loss of useful substances.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286332
Which one is related to urine concentration in mammals?
1 Testosterone hormone
2 Antidiuretic hormone
3 Oxytocin hormone
4 All of these
Explanation:
(b) Loop of Henle along with vasa rectae plays an important role in the concentration of urine. The proximity between loop of Henle and vasa recta as well as counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This mechanism helps to maintain a concentration gradient in medullary interstitium so human urine is nearly four times concentrated than initial filtrate formed. The urine concentrating mechanism plays a fundamental role in regulating water and sodium excretion.
NCERT Page-297 / N-212
Excretory Products and Their Elimination(NCERT)
286333
The site and principal mechanism for the passage of glucose into the bloodstream in the human kidney is the]#
1 collecting duct, by active secretion.
2 distal convoluted tubule, by passive diffusion.
3 glomerulus, by selective reabsorption.
4 proximal convoluted tubule, by selective reabsorption.
Explanation:
(b) Vasopressin hormone is also known as anti diuretichormone (ADH). It is secreted by the posterior lobe of pituitary gland. It helps in the reabsorption of water from glomerular filtrate thereby making the urine
concentrated. The deficiency of this hormone results in the excretion of dilute and excessive urine. This condition is known as diabetes insipidus.
Excretory Products and Their Elimination(NCERT)
286334
Filtration fraction is the ratio of
1 glomerular filtration rate (GFR) to renal plasma flow (RPF)
2 glomerular filtrate to urine
3 haemoglobin to oxyhaemoglobin
4 ${{\text{O}}_{2}}$ to $\text{C}{{\text{O}}_{2}}$
Explanation:
(a) Filtration fraction is the ratio of the glomerular filtration rate (GFR) to the renal plasma flow (RPF) i.e FF $=$ GFR/RPF. The filtration fraction, therefore, represents the proportion of the fluid reaching the kidneys which passes into the renal tubules.
NCERT Page-294/ N-209
Excretory Products and Their Elimination(NCERT)
286335
Glomerular filtrate contains
1 blood without blood cells and proteins
2 plasma without sugar
3 blood with proteins but without cells
4 blood without urea
Explanation:
(a) The molecules that leave the blood & enter the glomerular capsule are called glomerular filtrate. Glomerular filtrate contains blood without blood cells and proteins.
286331
Which of the following factors is responsible for the formation of concentrated urine?
1 Low levels of antidiuretic hormone.
2 Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys.
3 Secretion of erythropoietin by juxtaglomerular complex.
4 Hydrostatic pressure during glomerular filtration.
Explanation:
(d) The proximal convoluted tubule is the site whereby selective reabsorption occurs, restoring the level of metabolities in the tubule and prevents excessive loss of useful substances.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286332
Which one is related to urine concentration in mammals?
1 Testosterone hormone
2 Antidiuretic hormone
3 Oxytocin hormone
4 All of these
Explanation:
(b) Loop of Henle along with vasa rectae plays an important role in the concentration of urine. The proximity between loop of Henle and vasa recta as well as counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This mechanism helps to maintain a concentration gradient in medullary interstitium so human urine is nearly four times concentrated than initial filtrate formed. The urine concentrating mechanism plays a fundamental role in regulating water and sodium excretion.
NCERT Page-297 / N-212
Excretory Products and Their Elimination(NCERT)
286333
The site and principal mechanism for the passage of glucose into the bloodstream in the human kidney is the]#
1 collecting duct, by active secretion.
2 distal convoluted tubule, by passive diffusion.
3 glomerulus, by selective reabsorption.
4 proximal convoluted tubule, by selective reabsorption.
Explanation:
(b) Vasopressin hormone is also known as anti diuretichormone (ADH). It is secreted by the posterior lobe of pituitary gland. It helps in the reabsorption of water from glomerular filtrate thereby making the urine
concentrated. The deficiency of this hormone results in the excretion of dilute and excessive urine. This condition is known as diabetes insipidus.
Excretory Products and Their Elimination(NCERT)
286334
Filtration fraction is the ratio of
1 glomerular filtration rate (GFR) to renal plasma flow (RPF)
2 glomerular filtrate to urine
3 haemoglobin to oxyhaemoglobin
4 ${{\text{O}}_{2}}$ to $\text{C}{{\text{O}}_{2}}$
Explanation:
(a) Filtration fraction is the ratio of the glomerular filtration rate (GFR) to the renal plasma flow (RPF) i.e FF $=$ GFR/RPF. The filtration fraction, therefore, represents the proportion of the fluid reaching the kidneys which passes into the renal tubules.
NCERT Page-294/ N-209
Excretory Products and Their Elimination(NCERT)
286335
Glomerular filtrate contains
1 blood without blood cells and proteins
2 plasma without sugar
3 blood with proteins but without cells
4 blood without urea
Explanation:
(a) The molecules that leave the blood & enter the glomerular capsule are called glomerular filtrate. Glomerular filtrate contains blood without blood cells and proteins.
286331
Which of the following factors is responsible for the formation of concentrated urine?
1 Low levels of antidiuretic hormone.
2 Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys.
3 Secretion of erythropoietin by juxtaglomerular complex.
4 Hydrostatic pressure during glomerular filtration.
Explanation:
(d) The proximal convoluted tubule is the site whereby selective reabsorption occurs, restoring the level of metabolities in the tubule and prevents excessive loss of useful substances.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286332
Which one is related to urine concentration in mammals?
1 Testosterone hormone
2 Antidiuretic hormone
3 Oxytocin hormone
4 All of these
Explanation:
(b) Loop of Henle along with vasa rectae plays an important role in the concentration of urine. The proximity between loop of Henle and vasa recta as well as counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This mechanism helps to maintain a concentration gradient in medullary interstitium so human urine is nearly four times concentrated than initial filtrate formed. The urine concentrating mechanism plays a fundamental role in regulating water and sodium excretion.
NCERT Page-297 / N-212
Excretory Products and Their Elimination(NCERT)
286333
The site and principal mechanism for the passage of glucose into the bloodstream in the human kidney is the]#
1 collecting duct, by active secretion.
2 distal convoluted tubule, by passive diffusion.
3 glomerulus, by selective reabsorption.
4 proximal convoluted tubule, by selective reabsorption.
Explanation:
(b) Vasopressin hormone is also known as anti diuretichormone (ADH). It is secreted by the posterior lobe of pituitary gland. It helps in the reabsorption of water from glomerular filtrate thereby making the urine
concentrated. The deficiency of this hormone results in the excretion of dilute and excessive urine. This condition is known as diabetes insipidus.
Excretory Products and Their Elimination(NCERT)
286334
Filtration fraction is the ratio of
1 glomerular filtration rate (GFR) to renal plasma flow (RPF)
2 glomerular filtrate to urine
3 haemoglobin to oxyhaemoglobin
4 ${{\text{O}}_{2}}$ to $\text{C}{{\text{O}}_{2}}$
Explanation:
(a) Filtration fraction is the ratio of the glomerular filtration rate (GFR) to the renal plasma flow (RPF) i.e FF $=$ GFR/RPF. The filtration fraction, therefore, represents the proportion of the fluid reaching the kidneys which passes into the renal tubules.
NCERT Page-294/ N-209
Excretory Products and Their Elimination(NCERT)
286335
Glomerular filtrate contains
1 blood without blood cells and proteins
2 plasma without sugar
3 blood with proteins but without cells
4 blood without urea
Explanation:
(a) The molecules that leave the blood & enter the glomerular capsule are called glomerular filtrate. Glomerular filtrate contains blood without blood cells and proteins.
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Excretory Products and Their Elimination(NCERT)
286331
Which of the following factors is responsible for the formation of concentrated urine?
1 Low levels of antidiuretic hormone.
2 Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys.
3 Secretion of erythropoietin by juxtaglomerular complex.
4 Hydrostatic pressure during glomerular filtration.
Explanation:
(d) The proximal convoluted tubule is the site whereby selective reabsorption occurs, restoring the level of metabolities in the tubule and prevents excessive loss of useful substances.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286332
Which one is related to urine concentration in mammals?
1 Testosterone hormone
2 Antidiuretic hormone
3 Oxytocin hormone
4 All of these
Explanation:
(b) Loop of Henle along with vasa rectae plays an important role in the concentration of urine. The proximity between loop of Henle and vasa recta as well as counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This mechanism helps to maintain a concentration gradient in medullary interstitium so human urine is nearly four times concentrated than initial filtrate formed. The urine concentrating mechanism plays a fundamental role in regulating water and sodium excretion.
NCERT Page-297 / N-212
Excretory Products and Their Elimination(NCERT)
286333
The site and principal mechanism for the passage of glucose into the bloodstream in the human kidney is the]#
1 collecting duct, by active secretion.
2 distal convoluted tubule, by passive diffusion.
3 glomerulus, by selective reabsorption.
4 proximal convoluted tubule, by selective reabsorption.
Explanation:
(b) Vasopressin hormone is also known as anti diuretichormone (ADH). It is secreted by the posterior lobe of pituitary gland. It helps in the reabsorption of water from glomerular filtrate thereby making the urine
concentrated. The deficiency of this hormone results in the excretion of dilute and excessive urine. This condition is known as diabetes insipidus.
Excretory Products and Their Elimination(NCERT)
286334
Filtration fraction is the ratio of
1 glomerular filtration rate (GFR) to renal plasma flow (RPF)
2 glomerular filtrate to urine
3 haemoglobin to oxyhaemoglobin
4 ${{\text{O}}_{2}}$ to $\text{C}{{\text{O}}_{2}}$
Explanation:
(a) Filtration fraction is the ratio of the glomerular filtration rate (GFR) to the renal plasma flow (RPF) i.e FF $=$ GFR/RPF. The filtration fraction, therefore, represents the proportion of the fluid reaching the kidneys which passes into the renal tubules.
NCERT Page-294/ N-209
Excretory Products and Their Elimination(NCERT)
286335
Glomerular filtrate contains
1 blood without blood cells and proteins
2 plasma without sugar
3 blood with proteins but without cells
4 blood without urea
Explanation:
(a) The molecules that leave the blood & enter the glomerular capsule are called glomerular filtrate. Glomerular filtrate contains blood without blood cells and proteins.
286331
Which of the following factors is responsible for the formation of concentrated urine?
1 Low levels of antidiuretic hormone.
2 Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys.
3 Secretion of erythropoietin by juxtaglomerular complex.
4 Hydrostatic pressure during glomerular filtration.
Explanation:
(d) The proximal convoluted tubule is the site whereby selective reabsorption occurs, restoring the level of metabolities in the tubule and prevents excessive loss of useful substances.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286332
Which one is related to urine concentration in mammals?
1 Testosterone hormone
2 Antidiuretic hormone
3 Oxytocin hormone
4 All of these
Explanation:
(b) Loop of Henle along with vasa rectae plays an important role in the concentration of urine. The proximity between loop of Henle and vasa recta as well as counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This mechanism helps to maintain a concentration gradient in medullary interstitium so human urine is nearly four times concentrated than initial filtrate formed. The urine concentrating mechanism plays a fundamental role in regulating water and sodium excretion.
NCERT Page-297 / N-212
Excretory Products and Their Elimination(NCERT)
286333
The site and principal mechanism for the passage of glucose into the bloodstream in the human kidney is the]#
1 collecting duct, by active secretion.
2 distal convoluted tubule, by passive diffusion.
3 glomerulus, by selective reabsorption.
4 proximal convoluted tubule, by selective reabsorption.
Explanation:
(b) Vasopressin hormone is also known as anti diuretichormone (ADH). It is secreted by the posterior lobe of pituitary gland. It helps in the reabsorption of water from glomerular filtrate thereby making the urine
concentrated. The deficiency of this hormone results in the excretion of dilute and excessive urine. This condition is known as diabetes insipidus.
Excretory Products and Their Elimination(NCERT)
286334
Filtration fraction is the ratio of
1 glomerular filtration rate (GFR) to renal plasma flow (RPF)
2 glomerular filtrate to urine
3 haemoglobin to oxyhaemoglobin
4 ${{\text{O}}_{2}}$ to $\text{C}{{\text{O}}_{2}}$
Explanation:
(a) Filtration fraction is the ratio of the glomerular filtration rate (GFR) to the renal plasma flow (RPF) i.e FF $=$ GFR/RPF. The filtration fraction, therefore, represents the proportion of the fluid reaching the kidneys which passes into the renal tubules.
NCERT Page-294/ N-209
Excretory Products and Their Elimination(NCERT)
286335
Glomerular filtrate contains
1 blood without blood cells and proteins
2 plasma without sugar
3 blood with proteins but without cells
4 blood without urea
Explanation:
(a) The molecules that leave the blood & enter the glomerular capsule are called glomerular filtrate. Glomerular filtrate contains blood without blood cells and proteins.