What kind of blood do insects have?

If you’ve ever smacked a mosquito on your arm, you might have seen a little smear  of red blood on your skin afterward. But just whose blood was it? Do we have the same blood as insects? We asked biologist Claire Rusch from the University of Washington to help us find the answer. Got a question that’s buzzing around in your brain? Send it to us at BrainsOn.org/contact, because we’re the type to help you find an answer! See omnystudio.com/listener for privacy information.