TEAS Prep Notes - Urinary System

Urinary systemkidneysOxygenard bloodExcrete nitregenous wastesvery canwith waste-creatinine, uric acid, d urea&Abdominal Aortawater balance blood volume(secrete EPO & renin)VCTRenal ArteryElectrolyte Balance (Not',ca*,K+, ,etc.)RVRenalsegmental Arteries (~5)modifying Ideactivating medsto do this kidneysveinSVFilter blood a produce urineinterlobar arteries (~10)PHZ6-inhibit pathogensIV>TOO high?Arcuate arteries-due as to UTIAVBlood cells & proteins shouldcorticol radiate arteriesNEVER be fitteredUSEfight constrict duringCRVyes ? are to kidney damageReduce or flight.many Afferrent AcrenoleGlucose should be completelyattemically Lawe Bp in it will kidney;blood flowreapsorbed, none in urine-yes? clue that blood sugaris too high DiabetesAlbumin should be reabsorbedHematuria: Blood in urineGlomerulus(kidney damage)(site of filtration)Efferent Aperioleverawoodperitubular capillary bed(Reabsorption occurs hereex. glucose)venulestransportcell expunging waste through exocytosis : active9wouT TUBULE SYSTEM FOR FIRTERED FLUIDGlomescrean Capillary Bedkidnegs filter ~200million in each kidney~120ml/min- site where fluid isfittered OUT of bloodProduce ~ IL/Day of urine3vessels and intonephrons (tubules199 (10ay are reabsorbedthat carry filtrateinto peritubular capillariesto the ureter)-Bladder can hold 600mL of unne-ADHureters carry urinefluid reabsorptionto Bladder for storage.and urine outputurethra exits the bodyand blood volumeRenalmen: located within the penis- AldosteroneNa+ reabscription,Pelviscollectswomen: shorter, locatedwater follows, r blood volumeabove the vagince,urine1-1.5 inchesOTHER HORMONESRenin : promotes productionof Angiotensin,increases BPTubules are twisty andAngiotensin: increases BP,surrounded by pentubuarrasoconstrictioncapillaries.Glucose. salts, water eec.are reabsorbed BEFOREsecreared: capillaryTubuleex: creatinine, excess acid,etcthe tubules reach theReabsorption: Tubulecapillaryrenal pelvisqueosecreatinineex: glucose, H2O Na+ albuminGlucoseWBC ROC salt GlomerutusNotvenousH2O Bsystems3 on H2DEfferent-AfferentFlasmaArtenoleH2O GlucoseAnteriole ProteinNaNaAH2UvGreeningurine arainsH+awasecreatinumethrough minorcolyces thenrenal pelvismajor calycesTubue Nephron Physiology & Urine FormationProximal convoluted Tubule (PCT)~ 80% of Filtrate reabsorbs here(novie Pentubular capillary)Bowman's capsule- therefore about 40L1 Day passes this partGlomenius + Bowman's- All glucose gets reabsorbedsite of FILTRATIONcapsule: Renal corpuscle- ALL Amino Aclds get reabsorbedsurrounds the glomerulusBowman's capsule- Adjusted levels of H+/HCO3 (reabsorbed &- -H2Osecreted as needed)Executionpentubular- creatinine that didn't get filtered gets secrete- Nitrogenous wastesyPCTcapillaryOcreatinineVNOThin Descending LimbGlameruousUreaH2O follows the solutesuric acid(that were reabsorbed in the PCafterentFiltrate becomes more concentra-Na+ K+, mg st (Electrolytes)PCTNotlonger loops allow for greaterI- Glucoseconcentration- Amino acids - proceins aremajority of ureaThick Ascencing Limnthat Fittered areCTHEDistal- Acids /Basesconvoluted TubuleHas lots of Na+ pumps forNa! -active Na+ reabsorption- urochrome (give urinesensitive to Aldosteroneits color)which causes reabsorptionof Na+ from the DCTH2ONaFillersodium returns back toOnly H2O getsthe bloodreabsorbed hereo- RBCs- WBCSToo bigH20 has its finalto go throughchance to reapsurped and- plasma proteinsthe Bowman'sif water passes the conecting- Hormones (ex. insulin)capsueduct, it becomes part ofurinevenuerLOOP ofHenveuinecollecting Duct:Allows reabsorption of H2Oureterunder the influence ofAntidiuretic Hormone (ADH).BladderAs urine Passes the collectingduct, it becomes more concentrated !urethra