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A: The final reabsorption of water from ...

A: The final reabsorption of water from urine into blood ocurs through the collecting duct of a mammalian nephron, resulting in the production of hyperosomotic urine.
R: The loop of Henle is responsible for the formation of a sodium gradient across the depth of the medullary intersitium of a mammalian kidney.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertin, then mark (1)

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertin, then mark (2)

C

If Assertion is true statement but Reason is false, then mark (3)

D

If both Assertin and Reason are false statements, then mark (4)

Text Solution

Verified by Experts

The correct Answer is:
B
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Statement-1: The final reabsorption of water from the urine into the blood occurs through the collecting duct of a mammalian nephron resulting in thhe production of hyperosmotic urine. Statement-2: The loop of henle creates a sodium gradient in the interstitial fluid.

Identify the correct statement (s) regarding the human kidney I. It is responsible for the storage of nutrients such as glycogen II. It concentrates the urine by actively transporting water from the filtrate. III. It produces more dilute urine, when the collecting ducts become less permeable to water. IV. The kidney gets rid of urea from the body by secreting it into the descending arm of the loop of Henle. V. It responds to antidiuretic hormone by increasing urine output VI. It reponds to atrial natiutetic factor by decreasing urinary excretion VII. Kidney functions are controlled by negative feedback circuits involving ADH, RAAS and ANF.

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.

The given figure represents a single nephron from a mammalian kidney. Identify the labelled parts, match them with the functions (i-iv) and select the correct option. (i). The site of ultrafiltration. (ii). Particularly sensitive to ADH. (iii). The main site for the reabsorption of glucose and amino acids. (iv). Largely responsible for the maintenance of blood pH.

Match column I with column II and select the correct option form the codes given below. {:("Column I","Column II"),(A." Delivers blood to glomerulus",(i)." Ascending and descending limbs"),(B." Carries urine to pelvis",(ii)." Renal artery"),(C." Collects filtrate from Bowman's capsule",(iii)." Collecting duct"),(D." Loop of Henle",(iv)." PCT"):}