PHSI2006 Study Guide - Final Guide: Cholecalciferol, Extracellular Fluid, Nephron

• School: University of Sydney
• Department: Physiology
• Course: PHSI2006
• Professor: phsi2006

Document Summary

There are two types of nephrons: overall structure is the same but it is the position of the glomerulus/bowman"s capsule that defines these types, 1. Cortical: glomerulus is in the cortex- away from medulla: 2. Juxtamedullary nephrons: glomerulus still in cortex but next to medulla. Function of kidneys: overall function is to maintain composition and volume of body fluids! this allow cells in the body to function! to do this the kidneys create urine by doing the following things, 1. Regulate removal of electrolytes- na, k, cl: 3. Regulating ph of extracellular fluid (kidneys remove h and conserve hco3 is too acidic, and opposite if too alkaline): 4. Removal of wastes: urea, drugs, toxic substances, metabolic wastes, nh4+, nh3: 5. Ca2+ homeostasis- does this by regulating vitamin d3 by releasing renin: 6. Erythropoiesis= making new rbcs by secreting erythropoietin (won"t talk about these last two- they are minor roles): the blood comes in to the afferent arteriole.