PHPY 302 Study Guide - Final Guide: Collecting Duct System, Ascending Limb Of Loop Of Henle, Renal Blood Flow
3 Feb 2018
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The three processes of the kidney shortened: glomerular filtration, tubule reabsorption, secretion. The kid(cid:374)e(cid:455)"s a(cid:396)e (cid:1006) (cid:271)ea(cid:374)-shaped structures weighing less than 0. 5% of the total body weight. They consume 20% of the co, taking 20% of the work the heart does and returning blood back after filtration. The kidney has 2 basic layers: the cortex and, the medulla. Erythropoietin is released by cells in the cortex and medulla in response to low po2, this stimulates development of red blood cells by stem cells in bone marrow. The renal sinus is the space within the kidney that is adjacent to the renal medulla and contains calyces and the renal pelvis. Blood vessels and nerves pass through the sinus. The arteries form a portal system: blood flows from high resistance (afferent arterioles) high pressure (glomerulus) high resistance (efferent arteriole) peritubular capillaries low hydrostatic pressure high colloid osmotic pressure (due to ultrafiltration)
