Among the listed options, which component is not included within a renal pyramid?
Convoluted tubules
Collecting ducts
Loops of Henle
Peritubular capillaries
Renal pyramids are triangular-shaped structures located within the renal medulla of the kidney. They consist of loops of Henle, collecting ducts, and blood vessels, including the vasa recta and interlobular arteries and veins. However, convoluted tubules, which are responsible for reabsorption and secretion within the nephron, are primarily found in the renal cortex rather than within the renal pyramids. Therefore, option 1 is the correct answer.