EssentialQuestion:Howdomajororgansystems

worktogetherinlivingorganisms?Standards:S7L2d.Explainthattissues,organs,andorgansystemsservetheneedscellshaveforoxygen,food,andwasteremoval.

S7L2e.Explainthepurposeofthemajororgansystemsinthehumanbody(i.e.,digestion,respiration,reproduction,circulation,excretion,movement,controlandcoordination,andforprotectionfromdisease).

Watchthevideoclipbelowandidentifywhichsystemofthebody

hasasimilarfunction.

http://www.youtube.com/watch?v=8erOa6W67IM[watch1min30seconds]

DigestiveSystem

RoleoftheDigestiveSystemSeriesoforgansthat

convertfoodintoessentialnutrients,andmovesunwantedwasteout

Howdoesitdoit?

Chewing• MechanicalDigestion–Breakingdownfoodintosmallerpieces• Teethareusedtobreakfoodintosmallerpieces

EsophagusPipeconnectingthemouthtothestomach(involuntarymuscles)

StomachFoodischemicallybrokendownbyacidtoformpastecalledChyme

ChemicalDigestion

Foodisconverted(changed)into

substancesthatcanbeabsorbedbythebody

SmallIntestineWherethenutrients(glucose,protein,etc.)areabsorbedintothebloodstream

LargeIntestine• Pullsoutwaterfromleftovers• Lastportioncalledrectum• Anusistheopeningattheend

FinishtheStoryBecauseMrs.Fizzle’sclassdoesn’twanttoexit

Arnold“thebackway”,theydecidetogobackthewaytheycame.Writeabriefexplanationoftheroutetheywilltakeandwhattheywillseeandexperienceastheygobackthewaytheycame.

TheUrinarySystem

Role:Oururinarysystemproduces,storesandeliminatesurine,thefluid

wasteexcretedbythekidneys

Whatdoesexcretedmean?

TheUrinarySystem

Synonyms:Eject,Remove,Expel,Pass

PartsoftheUrinarySystem

KidneyUreters

Bladder

Urethra

KidneysActasfiltersforyourbodytocleanwastefromthebloodandremoveurea[awasteproduct

formedbythebreakdownofproteins]

UretersA setoftubesconnectingthekidneystothe

bladder

BladderA hollowmuscularorganshapedlikeaballoon,thatstoresurineuntilyouarereadytoemptyit.Thebladdercanholdupto16ounces(almosthalf

aliter)ofurinecomfortablyfor2to5hours.

UrethraAtubethatconnectsthebladdertotheoutsideofthebody

UrinarySystemVideoClip

http://bcove.me/0n6bc6vq[onlyfirst3-4mins]

ExcretorySystemTheroleoftheExcretory

Systemistoremovewastesfromthebody.

OrgansthatExcreteWaste

Organ WhatitExcretesLungs CarbonDioxide

Kidney/Bladder Urine

LargeIntestine Feces (foodwaste)

Skin Excesswater/Salt

Skin• OurBodysweatstomaintaintemperature• Youmayhavenoticedyousweatmoreinplaceslikeyourfeet,yourhandsoryourforehead• Thisisbecauseyouhavemoresweatglandsinthoseareas

WriteitDownOnascratchsheetofpaperwriteabriefstatementexplaininghowthistrashtruckissimilartotheorgansinyour

excretorysystemandhowitisdifferent.