Glomerular filtration pressure is caused by:
Pressure within the renal tubules
Blood pressure
Intrathoracic pressure
Intraabdominal pressure
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Renal capsule: This is the outer protective covering of the kidney and does not form urine.
B. Nephron: The nephron is the functional unit of the kidney that performs filtration, reabsorption, and secretion to form urine.
C. Renal pyramid: These structures contain parts of the nephron and collecting ducts but do not themselves make urine.
D. Ureter: The ureter transports urine from the kidneys to the bladder; it does not produce urine.
Correct Answer is A
Explanation
A. Storage: The urinary bladder’s primary function is to store urine until it is excreted during urination.
B. Filtration: Filtration occurs in the glomeruli of the kidneys, not in the bladder.
C. Reabsorption: Reabsorption happens in the renal tubules after filtration in the kidneys.
D. Buffering of H+: Buffering of hydrogen ions occurs in the kidneys and blood, not in the bladder.
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