Human Kidney Anatomy Diagram - Cortex, Medullary Pyramids, and Renal Pelvis #3236521 (License: Personal Use)

This vintage-style line illustration depicts a longitudinal section of the human kidney, clearly demarcating the outer renal cortex (label 1), the inner medullary pyramids (label 2) arranged radially, and the central renal pelvis (label 3) where urine collects before entering the ureter. The dotted lines indicate tissue boundaries, and the striated pattern represents the nephron-rich architecture essential for filtration and concentration.

Used in medical textbooks, anatomy courses, and health education websites to teach renal structure and function; ideal for students, clinicians, and patients seeking visual understanding of kidney physiology.