What is an opposable thumb?

Did you know you are basically a biological puppet master?! It’s true! Wiggle your fingers right now. You might be shocked to learn that there are absolutely zero muscles in your fingers! Instead, they are controlled by long tendons connected to muscles all the way down in your forearm, just like puppet strings! Join Mira and Finn on Science is Not Boring as they explore the ultimate superpower: the amazing teamwork between your busy brain and your hands. You'll discover that a massive 25% of your entire skeleton's bones are stuffed right into your hands and feet (that’s 27 bones in just one hand!). We will learn how your clever opposable thumbs let you switch from crushing power grips to delicate precision grips in a split second. Plus, find out how your fingertips are packed with 3,000 touch receptors that zoom electrical signals to your brain at 250 miles per hour! Without this epic partnership between brain and hand, early humans could never have invented the very first stone tools 3.3 million years ago, and we wouldn't have built the incredible world we live in today. Get ready for some mind-blowing human biology!