Topic 2 Structure and Function of the Kidneys and the Lower Urinary TractStructure of the Kidneys •Structure and function of the kidneys are closely linked.Gross Anatomy •Paired, retroperitoneal organs•Weight: g•Length: Width: Thickness: •Cortex, medulla and papilla -Composed of nephrons, blood vessels, lymphatics, and nerves. -Medulla divided into 8 – 12 conical masses called _______________________. Renal Vasculature •What percent of blood flows to the kidneys? ___________________. •Kidneys constitute what percent of total body weight?______________. •Renal artery →interlobar artery →•Arcuate artery→•Interlobular artery →•Afferent arteriole →•Glomerular capillaries (glomerulus) →•Efferent arteriole →•A capillary network: peritubular capillaries (around nephrons) •Peritubular capillaries supply blood to the nephron. -Juxtamedullary nephron’s peritubular capillaries also give rise to the vasa recta* -Blood from ascending recti →arcuate vein →interlobar vein and renal vein, which courses beside the ureter.•What are vasa recta?* Note: •
has intentionally blurred sections.
Sign up to view the full version.