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Details Title: Urinary System Description: Intro to the Urinary System Total Flash Cards: 15 Created: 04/24/2007 08:50:52	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Physiology of Urinary System Consists of: (2 pts) Definition -kidneys to form urine -structures to transport urine Term Five Kidney Functions Definition 1. Maintain plasma volume, therefor BP 2. Regulate H20 concentration 3. Acid/base balance (blood pH) 4. Eliminate wastes, drugs & hormones 5. Endocrine organs: -produce renin -erythropoetin (RBC formation) -vitamin D Term Functional Unit of Kidney Definition Nephron Term Three Factors Involved in the Formation of Urine Definition 1. Glomerular 2. Tubular Reabsorption 3. Tubular Secretion Term Glomerular Filtration (2 pts) Definition -movement of protein-free plasma from blood into Bowman's apsule by Bulk Flow across filtration membrane -20% of plasma in glomerulus is filtered Term Three Parts of Filtration Membrane Definition 1. Fenestrated Endothelium of Glomerulus 2. Basement Membrane 3. Filtration Slits b/w Podocyte Term Glomerular Filtration Pressures: 1. Glomerular BP 2. Blood Osmotic Pressure 3. Capsular hydrostatic Pressure 4. Capsular Osmotic Pressure Definition 1. 55mmHg 2. 30mmHg 3. 15mmHg 4. 0mmHg Term Glomerular Filtration Rate Definition -180L/day -125mL/min -entire plasma filtred 60 times/day Term Glomerulonephriis Definition -kidney damage -produces large volume of urine Term Regulation of Glomerular Filtration Rate: 1. Increased BP 2. Decreased BP Definition 1. Increased GFR 2. Decreased GFR -direct correlation Term Two Types of Regulating GFR Definition 1. Intrinsic Regulation 2. Extrinsic Regulation Term Two Kinds of Intrinsic Regulation of GFR Definition 1. Myogenic (MAP) 2. Juxtaglomerular Apparatus Term Myogenic Regulation of GFR Definition Increased BP --> Stretch --> Smooth Muscle Contraction --> Restricts Blood Flow --> Decreases GBP (glomerular BP) Term Juxtaglomerular Apparatus Definition if Term Extrinsic Regulation of GFR (5 pts) Definition -under extreme low MAP -SNS -> vasoconstraction -afferent arteriole = < flow to glomerulus -efferent arteriole = blood backs up in glomerulus -extreme stress =