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the collection of organs and glands that help control how the body works by adjusting the amount and type hormones that are in the body... more

  • Read more about Hypothalamus

The Brain

hypothalamus
All humans and many animals have a hypothalamus, found in the middle of the brain.
  • Read more about Why Are Our Arms the Same Length?

Ever wonder how our arms and legs know how fast and how long to grow? So have scientists.

Why Are Our Arms the Same Length? Russell Zuniga
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