Urinary system project

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  • Let's talk about the urinary system! the urinary system removes waste products.
  • Salts and water are an example of a few waste products that you don't need in your body.
  • A terrible example representing the urinary system, and the urea in the bloodstream.
  • Remember, that sometimes when you eat, there can be poisons in your body. The urinary system removes urea from the bloodstream.
  • Urea is a poison!
  • Inside the kidneys, are little filters called nephrons which take out all the urea and other unwanted stuff out of your blood.
  • All this stuff is later carried by the blood to the kidneys, which are two organs in your lower back. They look like kidney-beans!
  • From the kidneys, the urine travels down the ureters and is emptied into the bladder. The kidneys send a little bit of urine to the bladder every 10 to 15 seconds.
  • The bladder acts like a balloon and is also shaped like one too! As it receives more urine, it blows up into a round shape.
  • Circular muscles called sphincters keep the urine from leaking out the bladder's opening.
  • Nerves in the bladder send signals to your brain telling you that you need to go to the bathroom. The more the bladder fills up, the more intense the nerve signals you get.
  • Let's pretend this is a bladder! Once it is filled up with urine, you will then need to go to the bathroom.
  • This is the urethra!
  • The urine will then leave the bladder and go through a tube called the urethra. That leads it to the outside world.
  • This is the bladder!
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