The diameter of the efferent arteriole is typically smaller than that of the afferent arteriole. What is the result of this structural difference?
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Correct answer: It maintains high glomerular hydrostatic pressure
The smaller diameter of the efferent arteriole creates a 'bottleneck' effect. This resistance maintains the high hydrostatic pressure (approx. 55 mmHg) required for the pressure-driven process of glomerular filtration.
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More Renal Blood Supply questions
- Which of the following vessels branch directly from the renal artery as it enters the hilum of the kidney?
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- The interlobular arteries (cortical radiate arteries) primarily arise from which of the following?
- Which vessel directly supplies the glomerular capillary tuft?
- What is unique about the efferent arteriole in the renal circulation compared to most other systemic arterioles?