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 B
Explanation
A. Stomach: The stomach primarily functions in mechanical digestion and protein breakdown, but most absorption does not occur here.
B. Duodenum/proximal jejunum: These regions of the small intestine are responsible for majority of digestion and nutrient absorption, including fats, carbohydrates, and proteins.
C. Ascending colon: This is part of the large intestine, mainly involved in water and electrolyte absorption, not digestion.
D. Transverse colon: Like the ascending colon, this structure primarily functions in water absorption and feces formation.
Correct Answer is B
Explanation
A. Pressure within the renal tubules: This is tubular pressure, which opposes filtration and is not the driving force.
B. Blood pressure: Blood pressure within the glomerular capillaries provides the main hydrostatic pressure driving glomerular filtration.
C. Intrathoracic pressure: This affects respiration and venous return, not glomerular filtration.
D. Intraabdominal pressure: Elevated intraabdominal pressure can impair renal perfusion, but it does not drive filtration.
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