BISC 3221 Chapter Notes - Chapter 26: Internal Sphincter Muscle Of Urethra, Osmotic Concentration, Macula Densa
16 Aug 2018
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Superficial anatomy of the kidney: hilum: medial indentation where renal artery enters, renal vein and ureter exit, fibrous capsule has inner and outer layers. Inner layer folds inward at hilum: renal sinus: internal cavity within kidney where renal vessels, nerves, ureter branch within, thick outer layer extends across hilum, stabilizes position of structures. 2: 5 minor calyces merge to form major calyx, major calyces combine to form renal pelvis (fills most of renal sinus, connected to ureter at hilum, nephrons: tubular structures in cortex of each renal lobe. Interlobar arteries supply arcuate arteries which give rise to cortical radiate arteries (interlobular arteries) which supply portions of renal lobe: afferent arterioles branch from cortical radiate arteries to supply individual nephrons. Interlobular veins deliver blood to arcuate veins which empty into interlobar veins. Interlobal veins merge to form renal vein; no segmental veins exist. Includes glomerulus and glomerular capsule/bowman"s capsule (expanded initial segment of renal tubule)
