· What is the purpose of the urinary system?
· collect waste produced by cells and removes the waste from the body
· What are some of the structures in the urinary system?
· kidneys, ureters, nephron, blader, urethra
· How does excretion relate to homeostasis?
· filters out more water when it is cold and you are hydrated, doesn't excrete as much water when it is hot and you are dehydrated, maintaining homeostasis
· How many nephrons does your body have?
· about a million
· What do the kidneys do?
· filter out waste
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