Juxtaglomerular apparatus — Free Biology Illustration

Biology

Juxtaglomerular apparatus

Compact microscopic kidney structure showing the juxtaglomerular apparatus at the point where a short segment of distal tubule presses against an adjacent small afferent arteriole near a rounded glomerulus. The contact region contains a dense patch of darker-staining, closely packed macula densa epithelial cells in the tubule wall, opposed by enlarged granular juxtaglomerular secretory cells in the arteriole wall. The overall arrangement is a tight knot-like cluster of specialized cells with clear anatomical boundaries, rendered in pink, tan, and red tissue tones.

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