When we were doing the paper ball experiment, and when I was behind the plastic sheet when we were doing the science experiment, I reacted to the paper ball being thrown at me,also my eyes moved really fast, and I blinked like 3 times really fast, for my reaction of the paper ball being thrown at me. If I didn't have the reflex, I would not be alarmed that something was coming, because if I didn't have my nerves, or the nervous system in my human body. I think the nervous system did react when we did that experiment with the ruler that we used for the experiment, to complete the project. I think that this reflex was called an alarming reaction.