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Formation of Urine - Coggle Diagram
Formation of Urine
Tubular secretion
Function
2nd filtration of blood
Homeostasis
2nd filtration of blood
Glomerular filtration
Function
Filters water, ions, etc
Net filtration pressure
Glomerular filtration rate
App. 180L filtrate/day
Blood in afferent arteriole
Passes through glomerulus
Into efferent arteriole
Some enters tubules
Filtrate
Homeostasis
Autoregulation
Renin angiotensin system
BP drops
Renal baroreceptors triggered
Renin secreted
Leads to angiotensin I, II
2 more items...
BP change
SNS vasoconstriction/dilation
Keeps GFR constant
Inhibition of renin angiotensin system
Cardiac hormones
Increase sodium secretion
ANP
When blood volume increases
BNP
When blood pressure increases
Filtering substances from plasma
Tubular reabsorption
Function
Blood in peritubular capillary
Low pressure
More permeable
High protein concentration
Increased osmotic pressure
Filtrate journey
Proximal convoluted tubule
Juxtamedullary nephrons
Distal convoluted tubule
Countercurrent mechanism
Hypertonic interstitial fluid
Countercurrent multiplier
Hypotonic interstitial fluid
Reclaiming substances from interstitial fluid
Final urine concentration