Class 11BiologyExcretory Products and their EliminationMix Examples- Excretory Products and their Elimination
MediumComplete the following:
$(a)$ Urinary excretion = tubular reabsorption + tubular secretion -..........
$(b)$ Dialysis fluid = Plasma -..........
$(a)$ Urinary excretion = tubular reabsorption + tubular secretion -..........
$(b)$ Dialysis fluid = Plasma -..........
$(A)$ Glomerular filtration (or filtrate)
$(b)$ Nitrogenous wastes (or excretory substances)
Explanation:
$(a)$ The process of urine formation involves three main steps: glomerular filtration, tubular reabsorption, and tubular secretion. The net amount excreted is calculated as: $\text{Urinary excretion} = \text{Glomerular filtration} + \text{Tubular secretion} - \text{Tubular reabsorption}$. However, based on the provided equation structure, the missing term is the initial filtrate formed at the glomerulus.
$(b)$ Dialysis fluid is designed to mimic the composition of blood plasma but lacks nitrogenous waste products (like urea, uric acid, and creatinine) so that these substances can diffuse out of the patient's blood into the dialysis fluid.
$(b)$ Nitrogenous wastes (or excretory substances)
Explanation:
$(a)$ The process of urine formation involves three main steps: glomerular filtration, tubular reabsorption, and tubular secretion. The net amount excreted is calculated as: $\text{Urinary excretion} = \text{Glomerular filtration} + \text{Tubular secretion} - \text{Tubular reabsorption}$. However, based on the provided equation structure, the missing term is the initial filtrate formed at the glomerulus.
$(b)$ Dialysis fluid is designed to mimic the composition of blood plasma but lacks nitrogenous waste products (like urea, uric acid, and creatinine) so that these substances can diffuse out of the patient's blood into the dialysis fluid.
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Similar Questions
Choose the incorrect sentence.
Medium
View SolutionSubstance Glomerular filtrate Reabsorbed Urine $(i)$ Proteins $2 \,g$ $1.9 \,g$ $0.1 \,g$ $(ii)$ Glucose $162 \,g$ $162 \,g$ $0 \,g$ $(iii)$ Urea $54 \,g$ $24 \,g$ $30 \,g$ $(iv)$ Creatinine $1.6 \,g$ $0 \,g$ $1.7 \,g$
$(a)$ Glucose is completely reabsorbed.
$(b)$ Urea is partially reabsorbed.
$(c)$ Proteins are secreted into urine.
$(d)$ Creatinine is secreted into urine.
Which of the following options,in view of the above statements,is correct?
| Substance | Glomerular filtrate | Reabsorbed | Urine |
|---|---|---|---|
| $(i)$ Proteins | $2 \,g$ | $1.9 \,g$ | $0.1 \,g$ |
| $(ii)$ Glucose | $162 \,g$ | $162 \,g$ | $0 \,g$ |
| $(iii)$ Urea | $54 \,g$ | $24 \,g$ | $30 \,g$ |
| $(iv)$ Creatinine | $1.6 \,g$ | $0 \,g$ | $1.7 \,g$ |
$(a)$ Glucose is completely reabsorbed.
$(b)$ Urea is partially reabsorbed.
$(c)$ Proteins are secreted into urine.
$(d)$ Creatinine is secreted into urine.
Which of the following options,in view of the above statements,is correct?
Medium
View SolutionMatch the following:
$A$. Loop of Henle: $1$. Carries blood into the kidney
$B$. Renal artery: $2$. Area where a considerable amount of reabsorption takes place
$C$. Proximal convoluted tubule: $3$. Main area of secretion
$D$. Glomerulus: $4$. Filtration of blood
$E$. Distal convoluted tubule: $5$. Plays a role in concentration of urine
The correct pairing sequence is:
$A$. Loop of Henle: $1$. Carries blood into the kidney
$B$. Renal artery: $2$. Area where a considerable amount of reabsorption takes place
$C$. Proximal convoluted tubule: $3$. Main area of secretion
$D$. Glomerulus: $4$. Filtration of blood
$E$. Distal convoluted tubule: $5$. Plays a role in concentration of urine
The correct pairing sequence is:
Medium
View SolutionAnalogy type question:
$(1)$ Blood filtered by kidneys per minute: $1100-1200 \text{ mL}$ :: $GFR$ in a healthy individual: ............
$(2)$ From sweat glands of the skin: Sweat is produced :: From sebaceous glands: ............
$(1)$ Blood filtered by kidneys per minute: $1100-1200 \text{ mL}$ :: $GFR$ in a healthy individual: ............
$(2)$ From sweat glands of the skin: Sweat is produced :: From sebaceous glands: ............
Medium
View SolutionConsider the following water conservation mechanisms:
$A.$ Nasal countercurrent mechanism
$B.$ Dependence on metabolic water
$C.$ Highly hypertonic urine
$D.$ Living more on protein-rich diet
The kangaroo rat living in the desert can survive without drinking water because of:
$A.$ Nasal countercurrent mechanism
$B.$ Dependence on metabolic water
$C.$ Highly hypertonic urine
$D.$ Living more on protein-rich diet
The kangaroo rat living in the desert can survive without drinking water because of:
Medium
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