Through which structure does blood exit the glomerulus?

Rationale

Efferent arteriole is the structure through which blood exits the glomerulus.

The efferent arteriole carries blood away from the glomerulus after filtration has occurred, ensuring that the filtered blood continues its journey through the renal system.

A (Distal tubule) YOUR ANSWER

The distal tubule is a segment of the nephron located after the loop of Henle and is involved in the reabsorption of sodium and the secretion of potassium and hydrogen ions. It does not serve as a pathway for blood exiting the glomerulus; rather, it processes filtrate that has already been formed.

B (Proximal tubule) YOUR ANSWER

The proximal tubule is the first part of the nephron after the glomerulus, where significant reabsorption of water, ions, and nutrients occurs. Like the distal tubule, it is involved in the processing of filtrate rather than being a vessel for blood exiting the glomerulus.

C (Afferent arteriole) YOUR ANSWER

The afferent arteriole supplies blood to the glomerulus, introducing unfiltered blood into the filtration unit of the nephron. This vessel is the entry point for blood, making it the opposite of the efferent arteriole, which is responsible for blood exit.

D (Efferent arteriole) CORRECT

The efferent arteriole is the correct answer, as it carries blood away from the glomerulus after the filtration process has taken place. It transports the filtered blood into the peritubular capillaries, where further reabsorption and secretion occur.

Conclusion

In summary, the efferent arteriole is the structure through which blood exits the glomerulus, marking the transition from filtration to the next stages of renal processing. The other options either represent parts of the nephron involved in filtrate processing or the pathway for entering blood, underscoring the unique role of the efferent arteriole in the renal system.

Through which structure does blood exit the glomerulus?

Efferent arteriole is the structure through which blood exits the glomerulus.

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