Autonomic drug puzzle

We normally conclude the discusssion of ANS drugs with a "puzzle". I have no idea where this came from, and certainly it is not a fully realistic scenario that would be observed exactly like this in a real animal experiment. But the puzzle serves to review and thus gain additional understanding about tyhe functionalities of the ANS and ANS drugs. The recorded file now has been forwarded to your class rep. It is 20 MB and some emails cannot handle this - I am sure you will be colleagually (a new word?) interactive within your class and each student will be able to get it and listen to it.