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BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339722 Out of the four parts given below, which parts play significant role in forming concentrated urine in human?

1 Loop of Henle

2 vasa recta

3 Collecting tubule

4 Both 1 and 2

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339723 Medullary gradient is mainly developed due to

1

NaCl

and urea

2

NaCl

and glucose

3 Glucose and Ammonia

4 Ammonia and

NaCl

Explanation:

The proximity between the Henle's loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This gradient is mainly caused by $NaCl$ and urea.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339724 Assertion :
Urine is hypertonic in the descending limb of loop of Henle, while urine is hypotonic in the ascending limb.
Reason :
Ascending limb is impermeable to ${Na}^{+}$ whereas the descending limb is impermeable to $H_{2} O$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect

Explanation:

Counter current system is found in two limbs of loop of Henle. The ascending limb transports ${Na}^{+}$ and some urea into surrounding medullary tissue. It is impermeable to water. So it makes urine dilute or hypotonic. The walls of descending limbs are permeable of water and salt, so ${Na}^{+}$ and water from surrounding fluid are absorbed. The contents or urine become hypertonic.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339725 Which factor helps in maintaining an increasing osmolarity towards the inner medullary interstitium?
i. Counter current pattern in vasa recta
ii. Counter current pattern in Henle's loop
iii. Proximity between the Henle's loop and vasa recta

1 i, ii and iii

2 i and ii

3 i and iii

4 iii only

Explanation:

The Proximity between the Henle's loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium i.e. from $300 m O s m o l L^{- 1}$ in the cortex to about $1200 m O s m o l L^{- 1}$ in the inner medulla.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339722 Out of the four parts given below, which parts play significant role in forming concentrated urine in human?

1 Loop of Henle

2 vasa recta

3 Collecting tubule

4 Both 1 and 2

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339723 Medullary gradient is mainly developed due to

1

NaCl

and urea

2

NaCl

and glucose

3 Glucose and Ammonia

4 Ammonia and

NaCl

Explanation:

The proximity between the Henle's loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This gradient is mainly caused by $NaCl$ and urea.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339724 Assertion :
Urine is hypertonic in the descending limb of loop of Henle, while urine is hypotonic in the ascending limb.
Reason :
Ascending limb is impermeable to ${Na}^{+}$ whereas the descending limb is impermeable to $H_{2} O$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect

Explanation:

Counter current system is found in two limbs of loop of Henle. The ascending limb transports ${Na}^{+}$ and some urea into surrounding medullary tissue. It is impermeable to water. So it makes urine dilute or hypotonic. The walls of descending limbs are permeable of water and salt, so ${Na}^{+}$ and water from surrounding fluid are absorbed. The contents or urine become hypertonic.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339725 Which factor helps in maintaining an increasing osmolarity towards the inner medullary interstitium?
i. Counter current pattern in vasa recta
ii. Counter current pattern in Henle's loop
iii. Proximity between the Henle's loop and vasa recta

1 i, ii and iii

2 i and ii

3 i and iii

4 iii only

Explanation:

The Proximity between the Henle's loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium i.e. from $300 m O s m o l L^{- 1}$ in the cortex to about $1200 m O s m o l L^{- 1}$ in the inner medulla.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339722 Out of the four parts given below, which parts play significant role in forming concentrated urine in human?

1 Loop of Henle

2 vasa recta

3 Collecting tubule

4 Both 1 and 2

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339723 Medullary gradient is mainly developed due to

1

NaCl

and urea

2

NaCl

and glucose

3 Glucose and Ammonia

4 Ammonia and

NaCl

Explanation:

The proximity between the Henle's loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This gradient is mainly caused by $NaCl$ and urea.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339724 Assertion :
Urine is hypertonic in the descending limb of loop of Henle, while urine is hypotonic in the ascending limb.
Reason :
Ascending limb is impermeable to ${Na}^{+}$ whereas the descending limb is impermeable to $H_{2} O$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect

Explanation:

Counter current system is found in two limbs of loop of Henle. The ascending limb transports ${Na}^{+}$ and some urea into surrounding medullary tissue. It is impermeable to water. So it makes urine dilute or hypotonic. The walls of descending limbs are permeable of water and salt, so ${Na}^{+}$ and water from surrounding fluid are absorbed. The contents or urine become hypertonic.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339725 Which factor helps in maintaining an increasing osmolarity towards the inner medullary interstitium?
i. Counter current pattern in vasa recta
ii. Counter current pattern in Henle's loop
iii. Proximity between the Henle's loop and vasa recta

1 i, ii and iii

2 i and ii

3 i and iii

4 iii only

Explanation:

The Proximity between the Henle's loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium i.e. from $300 m O s m o l L^{- 1}$ in the cortex to about $1200 m O s m o l L^{- 1}$ in the inner medulla.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339722 Out of the four parts given below, which parts play significant role in forming concentrated urine in human?

1 Loop of Henle

2 vasa recta

3 Collecting tubule

4 Both 1 and 2

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339723 Medullary gradient is mainly developed due to

1

NaCl

and urea

2

NaCl

and glucose

3 Glucose and Ammonia

4 Ammonia and

NaCl

Explanation:

The proximity between the Henle's loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium. This gradient is mainly caused by $NaCl$ and urea.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339724 Assertion :
Urine is hypertonic in the descending limb of loop of Henle, while urine is hypotonic in the ascending limb.
Reason :
Ascending limb is impermeable to ${Na}^{+}$ whereas the descending limb is impermeable to $H_{2} O$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect

Explanation:

Counter current system is found in two limbs of loop of Henle. The ascending limb transports ${Na}^{+}$ and some urea into surrounding medullary tissue. It is impermeable to water. So it makes urine dilute or hypotonic. The walls of descending limbs are permeable of water and salt, so ${Na}^{+}$ and water from surrounding fluid are absorbed. The contents or urine become hypertonic.

BIOXI19: EXCRETORY PRODUCTS AND THEIR ELIMINATION

339725 Which factor helps in maintaining an increasing osmolarity towards the inner medullary interstitium?
i. Counter current pattern in vasa recta
ii. Counter current pattern in Henle's loop
iii. Proximity between the Henle's loop and vasa recta

1 i, ii and iii

2 i and ii

3 i and iii

4 iii only

Explanation:

The Proximity between the Henle's loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium i.e. from $300 m O s m o l L^{- 1}$ in the cortex to about $1200 m O s m o l L^{- 1}$ in the inner medulla.

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