Which of the following is TRUE concerning glomerular function?
An increase in GFR (glomerular filtration rate) increases urine formation
It is not an indication of kidney function
A decrease in GFR (glomerular filtration rate) causes polyuria (increase in urination)
It is unaffected by blood pressure
The Correct Answer is A
A. An increase in GFR increases urine formation: A higher GFR means more plasma is filtered, leading to more urine production.
B. It is not an indication of kidney function: GFR is a primary indicator of kidney function.
C. A decrease in GFR causes polyuria: A low GFR usually leads to oliguria (low urine output), not polyuria.
D. It is unaffected by blood pressure: GFR is directly influenced by blood pressure; low pressure decreases filtration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Causes Na⁺ excretion: Aldosterone promotes sodium reabsorption, not excretion, to increase blood volume and pressure.
B. Depletes blood volume: Aldosterone increases blood volume by retaining sodium and water.
C. Causes K⁺ reabsorption: Aldosterone promotes potassium excretion, not reabsorption.
D. Causes Na⁺ and water reabsorption: Aldosterone acts on the renal tubules to reabsorb sodium, which draws water back into circulation, increasing blood volume.
Correct Answer is ["A","B","E"]
Explanation
A. Reabsorption: The nephron reabsorbs water, glucose, and electrolytes from the filtrate back into the blood.
B. Filtration: The glomerulus filters blood, initiating urine formation by removing waste, water, and solutes.
C. Storage: Urine storage occurs in the bladder, not the nephron.
D. Increase RBC production: While the kidneys release erythropoietin, which stimulates RBC production, this is not a nephron-specific function.
E. Secretion: The nephron actively secretes waste products like hydrogen ions and drugs into the tubule for excretion.
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