Human Body: The Excretory System

Information involving the science of the Excretory system.

The word excretory means removal of waste substances from the body.

The human body is like a large organization. If the organization doesn’t run perfectly right then to make sure that it gets back on track someone has to fix the mistake. But, the human body doesn’t make mistakes. Only our brain does. Our brain controls everything we do and if we do something wrong another part of our body has to fix our mistake. That part of the body is the excretory system.

The heart is like the president of this organization. If the heart stops working everything else stops working. The only way to get the heart working again is to get a machine in a hospital or another person to restart it. But before the heart stops working the excretory system has to try and get it back on track. The heart isn’t part of the excretory system it is part of the circuitry system. So that is the problem the excretory system doesn’t exist all over the body. It is located between the systems.

The Kidney is the main part of the excretory system. It filters all of the blood that comes from the heart. But problems with the body don’t always travel though the blood. And some problems that do are too strong for the kidneys to fight. The kidney is made to fight small problems. The kidneys are like your garbage bins. Your garbage get sent to a large heap of rubbish (bladder) and them when the rubbish dump is full it get thrown under the ground (toilet). But if your have a lot of garbage it can not be taken to the dump the normal way, instead a special person has to come and get it. This special person is a granulation’s, macrophage or dendritic. These cells are part of the immune system. Instead of trying to block waste and send it out of the body these cells travel all over the blood and attack and “eat” bad or infected cells.

The kidneys help regulate your bodies liquids. If you have too much of one liquid it will be in the blood and whatever flows in the blood goes past the kidneys 100’s of times a day so if you drink too much water your kidneys will get it out of your blood in just over 10mins. This stops the build up of unwanted fluids. If you had just 20mls of alcohol a day then it would become very dangerous in days. Even if the kidneys stopped getting rid of water we would die.

Main Organs and Parts of the Excretory System

  • Bladder – Storage place for waste.
  • Kidneys – Blood filterer and fluid regulator
  • Aorta – Starts on the left side of the heart and then sends blood to main parts of the body. Including the kidneys.
  • Ureters – The tube which sends urine to the bladder from the kidneys.

Diseases and illnesses related to the excretory system

  • Nephritis - an inflammation of the glomeruli. The glomeruli are the parts of the kidney that turn waste into urine. Plural of glomerulus. Symptoms are bloody urine, edema (swelling/puffiness). 1 way of it happening is the immune system trying to attack the glomeruli.
  • Nephrosis – Also affects the glomeruli. (See picture at bottom) Symptoms are also puffiness except all over the body, mainly on the eyelids. This illness is caused by excretion of too much protein. Urine will turn foamy. This illness normally stops if you follow doctor’s prescription and take the required drugs and because these peoples kidneys can’t handle sodium properly follow a strict no-added salt diet.

  • Urinary tract infections (UTI’s) – Most of these problems are caused by negative bacteria like E. coli. If there is an obstruction to the urethra then catheterization might be needed.
  • Kidney Stones – Build up of solid waste in the kidneys. 80% are calcium stones, 5% uric acid, 2% are cystine and they remaining 13% are things like magnesium. These are always very painful and sometimes surgery is required to move these stones. Kidney stones can be caused by cancer, too much vitamin D, genetic predisposition and a problem in the parathyroid gland are the main causes.
  • Bladder Cancer – There is no known cause of bladder cancer but it is said that smoking and certain chemicals are the main causes. It is very hard to find and then get rid of bladder cancer with out causing further problems with the body. The main symptom for bladder cancer is bloody urine but a lot of other illnesses also share this symptom.
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247 Responses to “Human Body: The Excretory System”
  1. katie Says...

    On April 10, 2007 at 12:46 pm

    I like this website, has all the information i need.


  2. UHHH.. Hi Says...

    On April 18, 2007 at 4:13 pm

    wow you shouldve said something about the bladder…. thats like important… duh… plus i need INFORMATION ON THAT…. YES, SADLY I AM DOING A PROJECT ON THE EXCRETORY SYSTEM… and i am doing all the freaking work… greer and nick wont do ANYTHING at all……. i did the whole frickin thing i am so pissed off right now… and i hate GREER as it is, but NOOOOO, i have to get STUCK with HEEEEEERRR instead of somebody goood and now she thinks we’re BFF psh yeah right in her dreams i hate my life , accept for that i got new paint markers yesterday ya they’re really cute i also got a new juicy bag and new perfume by coach and juicy and i got my hair cut and TODAY i got my braces off OH YEAH WHO’S GORGEOUS HELL YA ITS ME ughh i still hate my life i have no luck at all……… okay well thanks babe your amazing okay bye


  3. Nicole Says...

    On April 24, 2007 at 5:37 am

    yeahh , so im doing a projecty too. but yeah, uhh this has some interesting stuff .

    later


  4. ME-time Says...

    On June 9, 2007 at 5:26 pm

    Same I’ve got a project on this to. This was helpful.

    Thanks
    M.T.


  5. BulLdOG BALLIN' Says...

    On October 2, 2007 at 6:22 am

    it’s nice but we don’t have printer at home (it’s for my homework)


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    On October 23, 2007 at 4:01 pm

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  8. Ahmed Says...

    On October 23, 2007 at 4:02 pm

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  9. some1 Says...

    On November 10, 2007 at 4:26 pm

    did any1 find the importance of the excretory system?


  10. Needin' help w/ bio!!!! Says...

    On November 14, 2007 at 5:53 pm

    I really need pics and a discription of 20 different workin parts ! Dang i Hate projects !!!!!!!!!!!


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  12. romie rose Says...

    On December 11, 2007 at 7:12 am

    thanks for helping me on my project………..

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  26. Kenny Says...

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  47. this actually is erica... Says...

    On December 13, 2007 at 12:34 pm

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    On April 24, 2008 at 10:37 pm

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  78. Eva Peron Says...

    On April 28, 2008 at 8:53 pm

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  80. blah blah Says...

    On May 1, 2008 at 5:56 pm

    i have to do a project and this gave me some info


  81. maii Says...

    On May 2, 2008 at 6:08 am

    I’m from spain, butI go to an english school. Now I’m doing a work about illnesses related to the nutritional apparatus, and exactly about illnesses of the excretory apparatus and I have to say that this page has been really helpful for my work.
    Is my english a bit bad? jaja. thank you!


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    On May 6, 2008 at 10:16 am

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    On May 9, 2008 at 10:43 am

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  89. Joshii Says...

    On July 25, 2008 at 2:09 am

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  90. pe_escota Says...

    On July 30, 2008 at 2:34 am

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  91. stellA_HUDgenS Says...

    On August 5, 2008 at 8:30 am

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  92. A Person with a mission Says...

    On August 9, 2008 at 4:59 pm

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  93. A Person with a mission Says...

    On August 13, 2008 at 5:24 am

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    On August 13, 2008 at 5:27 am

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    On August 14, 2008 at 3:13 am

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  98. julie Says...

    On September 21, 2008 at 10:33 pm

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    On September 23, 2008 at 11:31 pm

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  100. gale Says...

    On September 23, 2008 at 11:33 pm

    joke
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  101. kk good~?~? Says...

    On September 29, 2008 at 5:58 am

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  102. mornin starshine the earth says hello Says...

    On October 6, 2008 at 8:47 am

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  103. amy brown Says...

    On October 7, 2008 at 1:35 pm

    this site is so boring it needs some pictures and games to play to learn about the excretory system homie


  104. student Says...

    On October 9, 2008 at 10:23 am

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  105. josephine Says...

    On October 9, 2008 at 4:02 pm

    this is good information seriously…its for my project


  106. sam milby Says...

    On October 11, 2008 at 12:07 am

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  107. gut Says...

    On October 11, 2008 at 5:13 am

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  108. student Says...

    On October 12, 2008 at 11:02 am

    its pretty good I got 2 facts for my homework from it so I’d give it 4 stars :D keep up the good work.


  109. Nick Says...

    On October 12, 2008 at 11:12 am

    Gosh sorry I didn’t do anything but I WAS BUSY OKAY??

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  111. baby Says...

    On October 12, 2008 at 7:52 pm

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  112. blah Says...

    On October 14, 2008 at 6:11 pm

    it doesnt say anything on why we need it god :


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    On October 17, 2008 at 9:18 am

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  114. esmi Says...

    On October 24, 2008 at 10:38 am

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  115. Lumpy Says...

    On October 27, 2008 at 12:18 am

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  116. Safia Says...

    On November 3, 2008 at 6:19 pm

    I really liked this info. I am using it for my science projct. :P


  117. Stacy =) Says...

    On November 4, 2008 at 9:04 pm

    OMFG!! Thanks! I am doing a project with two other boys!! OMG! yes i know, doing a project for the excretory system with boys is HORRIBLE!! ugh! I am doing all the work! but this site just made it easier to get facts! thank you so much…..=D idk if this is cheating on my project or not….uh oh…oh well!


  118. The Man Says...

    On November 5, 2008 at 9:03 am

    Im doing a project with like 3 hot girls on the reproductive system. We are exploring eachother to try and understand the system. Its pretty sweet


  119. baby gurl j Says...

    On November 6, 2008 at 4:52 pm

    this really helped me with my homework thanks and some of those messages are stuped!!!!!!!They need to grow up.


  120. A WOG I woo Says...

    On November 8, 2008 at 5:57 pm

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  121. #126 Says...

    On November 11, 2008 at 3:33 pm

    yay im # 126!!!!!!!!


  122. BobTheBaloniBoy Says...

    On November 20, 2008 at 10:12 am

    Ummmm thanks this really helped. Who ever did #1 I said hi.


  123. manthan Says...

    On December 2, 2008 at 3:47 am

    i did not get about nephrons


  124. HAy Que peste! Says...

    On December 2, 2008 at 1:55 pm

    Thanks i have a project about this,interesting stuff you have there!


  125. ITS MEH Says...

    On December 4, 2008 at 1:36 pm

    so today im sitting here looking aT THIS STUPID SITE FOR EXCRETORY SYSTEM DUUUHH! SOO YEA IM DOING PROJECT ON THIS WHICH IS PRETTY LAAME OH fCUK
    yEEA ! WELL ANYWAYS I GOT TO GO TALK TO U AHOLES LATER


  126. mizzsu totallycoll Says...

    On December 7, 2008 at 6:08 pm

    i like thiz site it haz all the total info i need
    but u could sooo totally use more picture and cool stuff like tat
    so im here cause i got a project 2 do yet also cause im freakin bored


  127. $&% Says...

    On December 10, 2008 at 5:52 pm

    I like this, had just what I needed to finish up my report


  128. KERVZ Says...

    On December 14, 2008 at 8:56 pm

    i like it. make sense. i got the logic…
    sorry for you..


  129. .....B...... Says...

    On January 8, 2009 at 6:08 am

    my classmate ask me to research for their report because we have our own internet connection in our home. grrrrrrr.. i hate that i didn’t refuse them…grrrrr..they are very demanding..


  130. glum Says...

    On January 25, 2009 at 2:22 pm

    puppies!!


  131. uh? Says...

    On January 27, 2009 at 7:48 pm

    this is gay..


  132. mysalanious idiot Says...

    On January 28, 2009 at 8:50 am

    why the ‘eck are most of these people talking aboot?


  133. charlotte Says...

    On February 10, 2009 at 5:30 am

    are you shaw that you have the bladder in the excrtory ……xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx luv charlotte


  134. jo-jo Says...

    On February 12, 2009 at 1:18 pm

    hey my awsome partner maddi and i are doing a report on the exertory system and need some help. Maddi id the best partner i could ever ask for!!!!!


  135. jim Says...

    On February 12, 2009 at 1:19 pm

    oh jo-jo you are so cool!!! you rock my socks off….in bed


  136. hotgal1219 Says...

    On February 23, 2009 at 9:17 am

    this site is sexy and gross cooooooool poop on me f@%%ers


  137. hotgal1219 Says...

    On February 23, 2009 at 9:19 am

    kiss me i’m the excretory system babe


  138. will Says...

    On February 23, 2009 at 6:07 pm

    i just sharted


  139. angela b Says...

    On February 23, 2009 at 8:38 pm

    thank you this helped
    but i wish you listed the treatments for the urinary diseases.


  140. boobs Says...

    On February 24, 2009 at 6:31 am

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  141. lllllll Says...

    On February 26, 2009 at 11:06 am

    uioug jbu


  142. lolly Says...

    On March 8, 2009 at 10:06 pm

    i need this for my project well yeah lol!!!!!!!!!!!!!!!!!!!!!!!!


  143. um woah Says...

    On March 11, 2009 at 2:50 pm

    okay whoever like wrote a tonf of stuff about themselves on here has no life…. like UHHH HI… yea i bet none of that stuff is true why would you come on here and type all that stuff… come on… seriously


  144. Baby Girl Says...

    On March 23, 2009 at 3:39 pm

    WOW!!! Some people on here are harsh!!!!!! lol at least i am nice


  145. baby girl Says...

    On March 23, 2009 at 3:40 pm

    um woah! U sound mean!!!!!!!!!!! lol


  146. ....... Says...

    On March 24, 2009 at 8:07 pm

    site helps l0l


  147. ......, Says...

    On March 24, 2009 at 8:14 pm

    nvm bs….has messed up words weird:P


  148. m and h Says...

    On March 27, 2009 at 8:28 am

    the excretory system is a big thing but what would happen if the bladder exploded like it did to me?you no cuz i eat and drink so MUCH!


  149. h m Says...

    On March 27, 2009 at 8:32 am

    dylan smith is fat eating looser of the year. did u kno eats plain fat and drinks plain fat and hes not at all sexy


  150. jamie Says...

    On April 2, 2009 at 9:10 am

    this site was not helpful i didnt get to find anything and i dont no how you dumb people can!!!!!!


  151. Jessica Says...

    On April 2, 2009 at 11:46 am

    Hey jamie Don t worrie i agree i mean i found no info on what i’m looking for ! this website Sucks!!


  152. deby Says...

    On April 8, 2009 at 12:47 pm

    omg im doing a prject on this this is really helpful!!!!!!

    THX BUNCHES!!!!!


  153. Megan and Chris Says...

    On April 14, 2009 at 11:40 am

    HEYY! YOU LIKE EH DUH PEE PEE! (:
    Very nice!.


  154. big yon Says...

    On April 22, 2009 at 10:05 am

    heeee


  155. jello Says...

    On April 22, 2009 at 10:08 am

    party like a rockstar


  156. thecrunkoneee. Says...

    On April 24, 2009 at 2:03 pm

    coool.


  157. vv Says...

    On May 3, 2009 at 7:38 pm

    orale!!!


  158. We On A Boat! Says...

    On May 13, 2009 at 11:16 pm

    yay

    this is pretty beast
    i liek this commenting system!


  159. I'm On Shrooms! Says...

    On May 13, 2009 at 11:18 pm

    La La La Laaaaaa
    Laaa La Laaa Laaa


  160. Ricardo Garcia Says...

    On May 18, 2009 at 11:01 pm

    is good information


  161. Tiffany Says...

    On May 20, 2009 at 3:28 pm

    hellllo this site is really
    cool. and it has alot of info


  162. jesus Says...

    On May 21, 2009 at 12:08 am

    testis and scrotum


  163. jesus Says...

    On May 21, 2009 at 12:09 am

    omg my dick is huge!!!!!!!


  164. PEACE jaybby Says...

    On May 25, 2009 at 7:54 pm

    you know this is about the excretory system, its not a chat room..


  165. smarter than everyone here Says...

    On June 1, 2009 at 9:58 am

    you people are weird


  166. caroline Says...

    On June 10, 2009 at 10:30 am

    dis iz too short…………..i hav to make a project on human excretory system 15 pages long


  167. Babychiik Says...

    On June 12, 2009 at 9:46 am

    oh im the one workin with the dude. im one of the 3 hot girls


  168. Joe Jonas Says...

    On June 12, 2009 at 9:56 am

    hey bro i can believe you commented on this page, haha omfg lol your weird as hell now
    lets text eachother for nmo reason since we have unlimited texting well anyways wanna get
    hot tonight at 9:00pm at 83 24 75


  169. i can say Says...

    On June 27, 2009 at 9:21 am

    i like this website,,, cause the information i need is here.

    thanks


  170. kokey Says...

    On July 23, 2009 at 7:23 am

    weak kayong lahat mga b0b0 walang utak


  171. kokey Says...

    On July 23, 2009 at 7:24 am

    weak kayo mga gag0


  172. tina Says...

    On August 1, 2009 at 11:27 pm

    important……… dadada…whatever! this is important in our body…….


  173. Mariana Says...

    On September 5, 2009 at 5:50 am

    Ive got an assignment on this gotta make a model of the excretory system gotta right 100-600 words y i choose the equipment and i have to say a speech about it and im onli in yr eight :( but anyways this website helped a lot

    thanks (:


  174. CCCC Says...

    On October 16, 2009 at 10:27 am

    Response to UHHH.. Hi Says, shut the hell up, we don’t need to know your life story.


  175. aka Says...

    On November 1, 2009 at 6:18 am

    it provides much information I LIKE IT


  176. whatsittoya Says...

    On November 16, 2009 at 7:11 pm

    i needed some info on excretory and copied half of this in my own words. lol
    this is fun i’m really little


  177. hi Says...

    On December 1, 2009 at 12:25 pm

    thank for the fact


  178. Jesus Says...

    On December 1, 2009 at 1:26 pm

    Wear your helmet when riding your bicycle children!


  179. keerubel Says...

    On December 3, 2009 at 1:15 pm

    this is a buch of garbage this is the bigest waist of space dumb heads


  180. tjs Says...

    On December 3, 2009 at 2:38 pm

    (^^^)
    oh burn


  181. tjs Says...

    On December 3, 2009 at 2:42 pm

    supposed to be a shark :P


  182. lisa Says...

    On December 15, 2009 at 10:11 pm

    i got everythimg who ever wrote this RULEZ!!!!!!!!!!!!!!!!!!!!!!!


  183. candy Says...

    On January 6, 2010 at 4:14 pm

    youre wierd.


  184. YOU R ALL LOSERS!!! Says...

    On January 28, 2010 at 9:17 pm

    YOU people have no lives whatsoever!!!!!!!!!


  185. MUUAAAAHHHH HA HA Says...

    On February 23, 2010 at 8:56 pm

    DEEZ PEOPLE ON HERE MAKIN DESE DUM AZZ COMMENTS R STR8 UP BASERZ!!!!!!!!!!!!!!!!!!!!!!!!!!
    O YEA DIS WEBSITE CAME IN HANDY


  186. D@RKBLU3EAGL3 Says...

    On February 24, 2010 at 2:08 am

    U GUYS ARE SICK!!!!!!!!!!1 =]


  187. harley Says...

    On February 25, 2010 at 12:03 pm

    I think i might have bladdercancer it sucks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


  188. SKY_999 Says...

    On February 26, 2010 at 10:38 am

    I like dis site, it help many people do fine information about the topic!!!


  189. F T W ╚Ä╚ Says...

    On March 3, 2010 at 2:21 pm

    :P suk my d11k bchs


  190. m↔╘▲ ◘0 Says...

    On March 3, 2010 at 2:35 pm

    =) faaaaaaaaaaaaaagggggiiiiiiiittttttttttssssssss


  191. ₧◘≤∟65◘♥₧.86 Says...

    On March 3, 2010 at 2:37 pm

    ftw son!!!!!!


  192. CIA Says...

    On March 4, 2010 at 12:21 pm

    Good job.


  193. fuck me Says...

    On March 8, 2010 at 5:18 am

    thiss is so much better then all the other websites i tried btw my number is 0465121432 im free anytime and i really need some juicy sexxx


  194. sexii chix =] Says...

    On March 9, 2010 at 2:50 pm

    wahst up wells i don\’t get anypf dis wedsite so yeah an di have to do a project on this yeha pCe


  195. ~*Hayley*~ Says...

    On March 15, 2010 at 7:45 am

    Good sight…….wierd comments…….yeah it doesn’t really say anything ’bout the bladder…….oh and uhhh hi says….I know how you feel..I’m stuck with my stalker…AND this other person I learned to hate….and they won’t do anything, so I’m stuck getting the information AND making the powerpoint….Grawr.


  196. pervysage Says...

    On March 15, 2010 at 7:47 am

    :v


  197. :) - smiles Says...

    On March 17, 2010 at 6:21 pm

    What is with the stupid PICNIC ads its so weird why would we wanna see some randoms eating picnics ?????????????????????????
    J33zU$$$… hi and don’t be so racist thats cruel!!!!!!!!!!!


  198. kaylab Says...

    On March 23, 2010 at 10:07 am

    so awsome wish i new dat soner cuz were doin a project on dat


  199. rosssyy Says...

    On April 5, 2010 at 4:34 pm

    i luub dis website i wish i knew bout it sooner


  200. rosssyy Says...

    On April 5, 2010 at 4:37 pm

    oh yea ma numba is 4323609837


  201. kooky Says...

    On April 7, 2010 at 12:03 pm

    thanks alot you are the only person who helped me with my assigment=)


  202. JoCy Says...

    On April 7, 2010 at 8:26 pm

    THis Is actUAlly ReaLLy gOOd!!! I Really NEEded it For A POweR POiNT>


  203. Roknoir Says...

    On April 24, 2010 at 2:32 pm

    Did anyone else find that one stupid website with really basic HTML code that looks like it copied DIRECTLY from this web page? It made me smile that some people are so stupid that they can’t even paraphrase :)


  204. Your face Says...

    On May 2, 2010 at 12:19 pm

    I got a project too. :@


  205. Ryan Says...

    On May 3, 2010 at 8:46 pm

    -raises hand- also doing a project on this -rolls eyes-


  206. shaquana Says...

    On May 10, 2010 at 2:47 pm

    blue green and purple


  207. justin Says...

    On May 11, 2010 at 9:10 pm

    i have to due this stupid project on the excretory system and Its due FRIDAY!!!!!!!!!!!!!! but the good news is that i have all my information now because this site is AWESOME


  208. White Power!!!!! Says...

    On May 17, 2010 at 9:33 pm

    This website helped out alot……and these people leave bunch of dumb ass comments.


  209. nonya Says...

    On May 19, 2010 at 4:56 pm

    this person who wrote this needs more info….UGGHHH


  210. justin Says...

    On May 21, 2010 at 2:32 pm

    wat up dude


  211. swa Says...

    On May 25, 2010 at 11:58 am

    anyone help me to make the model of excretory system


  212. darling101 Says...

    On June 4, 2010 at 2:15 pm

    ur mamas r soooooo fat, she uses saturns rings as a hula hoop!!!!!!!!!!!!!!!!!!!!!!!!!! HA u all suck!!!!!!! and ur mamas h8 u!!!!!!!! <3


  213. fluffy bunny :D Says...

    On June 16, 2010 at 10:22 pm

    @ depressed/: i think your boyfriend broke upp with you because you madeout with all of this teammates. DUHHHHHHH
    And this website was very helpful. :D DDDDDDD


  214. She Says...

    On June 18, 2010 at 5:29 pm

    I HATE assignments!! They are sooo annoying ayye!!!


  215. ghost boy Says...

    On September 14, 2010 at 2:46 am

    fukkkkk u


  216. ELEANORA CUFFY Says...

    On September 27, 2010 at 2:19 pm

    I LOVE THIS WEBSITE SO MUCH


  217. Diana Carolina Sotelo Says...

    On October 2, 2010 at 10:39 am

    HI I LOVE THIS PAGE IS VERY INTERESTN AND YOU FIND A LOT OF ANSWERS


  218. jack peterson Says...

    On October 15, 2010 at 3:49 am

    Local Line LLC is specialised in providing Services and supplies to oil and gas sectors. Supplies different types of chemicals used in oil sectors in the Middle East and around the world.
    kcl Technical Grade
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  219. Reagan White Says...

    On November 3, 2010 at 4:15 pm

    I need to know ALL of the body parts for a project. I have a list of different body parts, and I have to make 2 more lists: 1 with parts which are in the system, and 1 with the rest. “kidney” and “bladder” are NOT on the main list. :(


  220. Reagan White Says...

    On November 3, 2010 at 4:15 pm

    I need to know ALL of the body parts for a project. I have a list of different body parts, and I have to make 2 more lists: 1 with parts which are in the system, and 1 with the rest. \”kidney\” and \”bladder\” are NOT on the main list. :(


  221. JENNY Says...

    On November 15, 2010 at 6:48 pm

    omg i need it for home work forget the book so cAME HERE ITS HELPFULL


  222. bbbbbbbbbbbbbbbb Says...

    On November 16, 2010 at 10:45 pm

    this is boring but i need to do homework


  223. Hotti3 Says...

    On December 22, 2010 at 2:15 pm

    This wesite is soooooooooooooooo helpful for my project:)……even though i hate them sssssooooo much


  224. Amna Says...

    On January 25, 2011 at 1:29 pm

    This is really boring.


  225. ruby Says...

    On January 28, 2011 at 1:22 pm

    ooooooooo!!!!!!!!!!!!!!!!!
    strange , i\’ve also gotta h.w.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


  226. ewan Says...

    On February 9, 2011 at 2:19 am

    oooooooooooooooooooooooooooooooooooooooooooooooooooooooooowwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwsssssssssssssssssssssssssssssssssssssssssssssssssssssssss!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


  227. Emma Says...

    On March 13, 2011 at 9:21 pm

    Does this say anything about what if the excretory system stops working? Sorry, I was skimming it.


  228. jack Says...

    On March 30, 2011 at 6:30 pm

    thanks but what about the lungs are they a part of the excretory system but anyway good work with the website :)


  229. princess loch!!! Says...

    On July 19, 2011 at 3:54 am

    blablablablablabla!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:)


  230. victor harbour high school sucks Says...

    On July 31, 2011 at 11:06 pm

    well this was no help


  231. NIKNIK Says...

    On October 16, 2011 at 5:35 am

    uuuhhh….i like this website all i search in science is there…..:D


  232. Fish Says...

    On November 12, 2011 at 2:41 pm

    Reading these comments made my day….even if I still need to finish my project ;)


  233. Janie Says...

    On November 27, 2011 at 8:51 pm

    I hate the excretory system i have to make a powerpoint then present it ! i cant present because i know i will laugh my class will laugh at the bladder part . I have enrcihment everyweek to soo yeah our computer time in on friday during enrichment!!! FUCK! I swear i wish i could go to class and finish the freakin project!!!!!! Im soo behind!!!!! BTW WHAT ABOUT THE BLADDER PART ON HERE THTS PART OF IT! lol…the sight would be good if it gave u pics.


  234. erika Says...

    On December 3, 2011 at 9:21 am

    WOW :) )

    —that’s the beauty of science ! DISCOVER anything :) )


  235. Crona Says...

    On December 8, 2011 at 7:12 am

    this really helps!! thanks to whoever did this! :)


  236. Libby Says...

    On January 19, 2012 at 3:44 pm

    Woooaaaahhh. How bout we dont post our problems on a excretory website.. Kay? yahhhhh.


  237. banana granola bar Says...

    On February 13, 2012 at 11:12 am

    haha:P


  238. Zayn Says...

    On February 13, 2012 at 3:02 pm

    lame people


  239. ige Says...

    On February 14, 2012 at 9:38 pm

    oh yeah.thnx a lot..


  240. Idiots?:) Says...

    On March 5, 2012 at 6:08 pm

    hey yeah its me being boring doin this project on this subject well i feel dumb and bored and this website is not that great it doesn’t really help me!


  241. hanshane remo Says...

    On March 14, 2012 at 6:09 am

    It’s so amazing knowing exretory system.. Now im intersted about it..


  242. Bob Says...

    On April 13, 2012 at 9:50 am

    Wats up fag ass niggas WMD suck my dick


  243. Fifi Doson Says...

    On April 25, 2012 at 11:19 am

    Wow never new alot of that


  244. steyn Says...

    On May 8, 2012 at 1:17 am

    wow i become new to this..


  245. joy:) Says...

    On November 19, 2012 at 6:15 am

    i like this website because I found the basic information that I need:)


  246. Big butts in a can Says...

    On January 1, 2013 at 2:08 pm

    Great info thanks! Got everything i needed!


  247. Catie Says...

    On February 28, 2013 at 10:13 pm

    That was so helpful


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