Insulin - How Insulin WorksInsulin is a hormone that helps turn food into energy. Insulin is released by beta cells in the Islets of Langerhans -- there are about a million of these iselts, or islands inside your pancreas! After you eat, sugar from food goes into the bloodstream. Insulin unlocks body cells so they can accept a special delivery of sugar (aka glucose). The cell transforms glucose into energy for you to run and play. When these islets don't make insulin, that's called diabetes, and it's a big bummer to those folks who have it!

We’ve got a thymus plush now! This incredible gland is an important part of the immune system, it works hardest in young bodies and declines after puberty. The thymus, located inside your chest, nestled between your lungs, provides a place for T-cells to mature before they go out and kick some virus, bacteria or parasite booty. Thanks, Thymus! Also, if you’ve ever eaten sweetbreads, that’s the (not human) thymus you’re munching on.