Question

which blood vessel leads into the glomerulus? a afferent arteriole b efferent arteriole c renal artery d peritubular capillaries

Explanation:

To determine which blood vessel leads into the glomerulus, we analyze each option:

• Option A: The afferent arteriole supplies blood to the glomerulus. This is a key part of the renal corpuscle's blood supply, where filtration begins.
• Option B: The efferent arteriole carries blood away from the glomerulus, not into it.
• Option C: The renal artery is a larger vessel that branches into smaller arteries (including those that eventually form the afferent arteriole), but it does not directly lead into the glomerulus.
• Option D: Peritubular capillaries are involved in reabsorption and secretion around the renal tubules, not in supplying the glomerulus.

So, the correct answer is the one that directly supplies blood to the glomerulus.

Answer:

A. Afferent arteriole