How Anesthesia Works

3/17/2015, 2:49:11 PM , duration(0:0:3)
Society & Culture
The use of general anesthesia is less than 200 years old. Before doctors were able to cause unconsciousness in patients, surgery was brutal for all involved. But despite this advancement in medicine, science still has no idea how it works.<br><br> Learn more about your ad-choices at <a href=''></a>