Chapter 26- Urinary System (Physiology)
Proteins: Filtered in the glomerulus? Reabsorbed? (if yes)Location where reabsorption takes place?
Yes (small proteins); Yes; PCT
Creatinine: Filtered in the glomerulus? Reabsorbed? (if yes)Location where reabsorption takes place?
Yes; No reabsorption
Amino Acids: Filtered in the glomerulus? Reabsorbed? (if yes)Location where reabsorption takes place?
Yes; Yes; PCT
Glucose: Filtered in the glomerulus? Reabsorbed? (if yes)Location where reabsorption takes place?
Yes; Yes; PCT
Uric Acid: Filtered in the glomerulus? Reabsorbed? (if yes)Location where reabsorption takes place?
Yes; Yes; PCT
Water: Filtered in the glomerulus? Reabsorbed? (if yes)Location where reabsorption takes place?
Yes; Yes; PCT and descending loop of henle
Electrolytes (sodium, potassium, chloride): Filtered in the glomerulus? Reabsorbed? (if yes) Location where reabsorption takes place?
Yes; Yes; PCT, ascending loop, Na and K sometimes in collecting duct
Capsular hydrostatic pressure (CHP)
blood pressure (10mmHg) force of fluid in capsular space; opposes filtration pushing water back into blood of glomerular capillaries
Colloid osmotic pressure (COP)
blood pressure (30mmHg) created by presence of proteins/solutes; OPPOSES filtration and PULLS water into glomerular capillaries via osmosis
Glomerular hydrostatic pressure (GHP)
blood pressure (50mmHg) in the glomerular capillaries pushes fluid/solutes out of glomerulus into capsular space
What is the relationship between NFR and GFR?
increased NFR = increased GFR decreased NFR = decreased GFR
pH of Urine
normal is 4.5-8 high- blue low- orange
Glycosuria
presence of glucose in the urine dip test: positive- dark green/red negative- blue
Ketouria
presence of ketones in the urine dip test: positive- pink/dark red negative- tan
Proteinuria
presence of protein in urine dip test: positive- green/blue negative- yellow
Urea: Filtered in the glomerulus? Reabsorbed? (if yes)Location where reabsorption takes place?
Yes; Yes; PCT
Net Filtration Pressure
GHP- (COP + CHP) = NFP 50 - ( 30 + 10 ) = 10 mmHg
Erythrocyte: Filtered in the glomerulus?
No
Leukocyte: Filtered in the glomerulus?
No
Ketones: Filtered in the glomerulus?
No (sometimes in diabetics though)