BIOL 3324 Lecture Notes - Lecture 19: Peritubular Capillaries, Nephron, Afferent Arterioles
17 Nov 2016
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Primary function= filter blood, remove waste, filtrate urine. Secondary function= make calcitriol, make and release erythropoietin. Regulate: ion levels, acid base balance, bp. Adjusts quantity of water, plasma constituents to conserve or eliminate. Maintains ecf volume stability, electroly composition, osmolarity. Renal columns = parts of cortex and project into the medulla. Divide medulla renal pyramids: renal papilla= apex of pyramid, corticomedullary border= base of pyramid against cortex. Major calyces= 2 or 3 for each kidney: made of minor calyces. Hilium= where vessels, nerves and ureter exit and enter kidney. Renal corpuscle= contact blood and filtering tube: glomerulus= ball of capillaries. Where water and solutes are filtered from blood. Filtrate is like plasma: afferent arterioles= blood glomerulus, efferent arterioles= blood not filtered by glomerulus. Still arteriole: bowman"s capsule= cups the glomerulus. Space between capsule and glomerulus directly receives filtrate. Afferent and efferent arterioles connect with glomerulus. Renal tubule= modifies filtrate to make urine.
