Home
Class 12
BIOLOGY
Read the statements given below A. The r...

Read the statements given below
A. The renal cortex extends between the medullary pyramids as Columns of Bertini.
B. ATP molecules are used in kidneys to convert NH3 to urea.
C. Reabsorption of water in PCT and loop of Henle is obligatory.
D. High medullary osmolarity is mainly developed due to NaCI and urea by counter current mechanism of vasa recta and loop of Henle.
The correct statements are

A

A, B & D

B

A, B & C

C

A, C & D

D

B, C & D

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

The increase in osmolarity from outer to inner medullary interstitium is maintained due to : (i) Close proximity between Henle's loop and vasa recta (ii) Counter current mechanism (iii) Selective secretion of HCO 3¯ and hydrogen ions in PCT (iv) Higher blood pressure in glomerular capillaries

Which one of the following statement is correct regarding Excretion by human Kidneys. (A) Ascending limb of loop of Henle is impermeable to electrolytes. (B) Distal convoluted tubule is incapable of reabsorbing HCo3. (C) Descending limb of loop of Henle is impermeable to water (D) Nearly 99% of the glomerular filtrate is reabsorbed by renal

Read the following statements about the excretory system in humans: I. A fall in GFR can activate the JG cells to release renin. II. ADH can also affect the kidney function by its constrictory effects on blood vessels. III. 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 outer medullary interstitium. IV Our lungs remove large amounts of CO_(2) (108 litres/day). V. Renal calculi are the stone or insoluble mass of crystallised salts like oxalates within the kidney. How many of these are correct?

Read the following statements and find out the incorrect statements. (a) Kidney plays very significant role in the removal of NH_(3) (b) Terrestial adaptation necessitated the production of more toxic nitrogenous wastes like urea and uric acid for conservation of water . (c) Some amount of urea may be retained in the kidney matrix of some of the ureotelic animals to maintain a desired osmolarity. (d) Uricotelic animals excrete nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water .

Consider the given statements and choose the correct option (a) many bony fishes , tadpole larva of frog and terrestrial insects are ammonotelic in nature (b) in frog kidneys are mesonephric (c) GFR falls - activation of JG cells - release rennin - GFR normal (d) NaCI is transported by the ascending limb of Henles loop which is exchanged with the ascending portion of visa recta

Which of the following statements about the functioning of the kidney is CORRECT ? I. On a average , 1100-1200 ml of blood is filtered by the kidneys per minute which constitute roughly 1/5th of the blood pumped out by both the Ventricles of the heart in a minute . II. JGA is a special sensitive region formed by cellular modifications in the distal convoluted tubule and glomerulus at the location of their contact . III. The ascending limb of Henle's loop is impermeable to water but allows transport of electrolytes. IV. The collecting duct allows passage of small amounts of urea into the medullary interstitium to keep up the osmolality.

How many of the following functions can be correctly correlated with loop of Henle ? A. Reabsorption of nearly all of the essential nutrients. B. Reabsorption in this segment is minimum. C. A significant role in the maintenance of high osmolarity of medullary interstitial fluid. D. Reabsorption of 70-80 percent of electrolytes and water. E. Conditional reabsorption of Na^(+) .