Question

Question. Most reabsorption of substances from nephrons occurs in the _____. The ______ is designed to help maximize water reabsorption:

Group of answer choices

  PCT; loop of Henle

DCT; PCT

  DCT; collecting ducts

  Loop of Henle; DCT

  Collecting ducts; loop of Henle

Question. At the kidneys, increased _______ of Na+ typically leads to increased _______ of K+:

Group of answer choices

Reabsorption; secretion  

  Symport; antiport

  Secretion; retention

Question. Decreased GFR from kidney disease could cause (select ALL):

Group of answer choices

retention of wastes

increased blood volume

decreased urine production

increased urine production

decreased blood volume

Answer 1

Ans) option a is correct. PCT and Loop Of Henle

Proximal convoluted tubule functions as a pH regulator of the filtrate as in intestine it will exchange the hydrogen ions for the bicarbonate ions. Also, various organic acids are secreted into the filtrate.

Loop of henle functions as it will recover sodium chloride and water from urine.

Ans ) option a is correct. Reabsorption and secretion

In extracellular fluid, positive charge electrolyte is Sodium. The presence of sodium will determine the volume of blood and blood pressure.

Ans) option a is correct. Retention of wastes

The level of GFR will determine the filtration of metabolic waste. Low level of GFR will not allow the filtration of metabolic waste present in the blood into renal tubule. Hence retention of waste is the correct option.