Bio47S11HO18

Bio47S11HO18 - Biology 47 - Anatomy Lecture 18 Urinary...

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Biology 47 - Anatomy Lecture 18 Urinary System : Kidney : Histology 1.25 million : Nephron : Basic function : “ Blood Modifier ” ; Separates : Waste products from Valuable materials Waste products : Excess water, electrolytes, minerals & metabolic products : (ie : urea, creatine, urobiligen ) Valuable substances : Organic Nutrients, Minerals, Electrolytes, Water Two Basic Nephron Functions: 1. Blood Filtration : “ Strainer ” or “ Sieve • Function: Separates blood fluid from : • Separates according to SIZE : NOT filtered : Unfiltered Substances : Filtered : Enter: Become: 2. Filtrate Re-absorption : Re-absorb : Valuable filtered components Result: Non -reabsorbed substances: Re -absorbed substances: Nephron Anatomy : 2 Regions : 1. Renal Corpuscle : Blood Filtering Structure Site of : Location:
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2. Renal Tubule : Filtrate modifying structure Site of : Location: Renal Corpuscle : 2 Divisions A. Glomerulus : “Tuft” of small : Function : Components of the “Filtration Membrane” : 3 Layer Filter : 1. Endothelial Cells : Blood Vessel : 1 st level of “filterr”
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Bio47S11HO18 - Biology 47 - Anatomy Lecture 18 Urinary...

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