The excretory system
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Hi! This is the urinary system! How can I help you today? Yes please, what is this thing called the urinary system? The organs, tubes, muscles and nerves that work together to create, store and carry urine is the urinary system! and don't these organs are tubes have any name? Sure they do! The main part of the urinary system are... the kidneys! The kidneys are bean shaped organs about the size of your fist They are near the middle of the back just below the rib cage The ureterers! tubes leadind from the kidneys to the bladder The bladder!. The bladder is a holow muscular organ she's like a big ballon and the urethra! the tube leading from the bladder to the exterior of the body The kidneys filter the blood and remove waste producing a liquid called urine Some people call it pee! but remember the clean blood leaves the kidneys and travels thoughout the body Each kidney has millions of urine making units known as nephrons! that filters the blood that flows through the kidneys as the kidneys do that thing the urine is carried by two thin tubes called ureters down to the bladder Muscles in the ureter walls constantly tighten and relax to force urine downwards away from the kidneys Small amount of urine are emptied into the bladder from the ureters about every 10 to 15 seconds The bladder is the storage sac that holds the urine When the bladder is about halfway full your body tells you to go to the bathroom then the bladder muscles go into action and the urine is released from the body through a tube called the urethra Let me tell something that is really interesting
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