The ability of the kidneys to remove molecules from the bl ood plasma by excreti

Question

The ability of the kidneys to remove molecules from the bl ood plasma by excreting them in the uh a. Glomerular filtration b. Renal clearance c. Micturation d. Reabsorption a. Tangeod measure of GFR because it is fitered but neither reabsorbed nor secreted by the kidneys b. False Due to the action of aldosterone water reabsorption is promoted because a. Sodium is excreted into the urine b. Potassium is reabsorbed into peritubular blood c. Sodium is reabsorbed into peritubular blood d. Aldosterone functions to insert aquaporins Granular cells of the juxtaglomerular apparatus respond to decreased blood volume by secreting a. Renin b. Inulin c. Angiotensinogen d. Antidiuretic hormone would impair the ability of the kidney to regulate pH of the 10 Inhibiting the actions of blood. a. Aldosterone b. ADH c. Carbonic anhydrase d. Inulin Page 2 of 6

Explanation / Answer

ABILITY OF THE KIDNEYS TO REMOVE MOLECULES FROM BLOOD PLASMA BY EXCRETING THEM IN URINE IS KNOWN AS

ANS : B ] RENAL CLEARANCE

INSULIN IS A GOOD MEASURE OF GFR BECAUSE IT IS FILTERED BUT NEITHER REABSORBED OR SECRETED BY THE KIDNEYS.

ANS : TRUE

DUE TO THE ACTION OF ALDOSTERONE THE WATER REABSORPTION WAS PROMOTED BECAUSE

ANS :C] SODIUM IS REABSORBED IN TO PERITUBULAR CAPILLARIES

GRANULAR CELLS OF JUXTAGLOMERULAR APPARATUS RESPOND TO DECREASED BLOOD VOLUME BY

ANS : A ] RENIN

INHIBITING THE ACTION OF ...........WOULD IMPAIR THE ABILITY OF THE KIDNEYS TO REGULATE PH.

ANS :C. CARBONIC ANHYDRASE

RENAL CLEARANCE IS THE RATE AT WHICH THE PLASMA IS CLEARED OF A SUBSTANCE WITH THE HELP OF KIDNEYS.IT IS EXPRESSED IN ML/MINUTE THAT MEANS THE VOLUME OF PLASMA PER UNIT TIME.

GFR OR GLOMERULAR FILTRATION RATE IS MEASURE OF KIDNEY FUNCTION .INSULIN CAN BE USED AS AS A GOLD INDICATOR OF GFR AS INSULIN IS FILTERED BY KIDNEYS BUT NEVER REABSPRBED OR SECRETED BY TUBLUES.SO INSULIN CLEARANCE IS MEASURED IN GFR.

ALDOSTERONE INCREASES THE SODIUM WATER REABSOPTION .IT ALSO CAUSES THE SECRETION OF POTASSIUM IN TO TUBULAR LUMEN .SO ALTOGETHER IT CAN INCREASE THE BLOOD VOLUME THERE BY INCREASING BLOOD PRESSURE.

RENIN IS SECRETED BY JUXTAGLOMERULAR CELLS,IT IS VERY IMPORTANT IN MAINTAINIG BLOOD VOLUME AND PRESSURE.

CARBONIC ANDYDRASE IS VERY IMPORTANT IN REGULATING THE PH OF THE BLOOD .

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