a) whether it has an agonistic or antagonistic action,

b) the underlying (cellular) mechanism by which it produces the preceding (don't tell me what it does to the entire organism), and

c) the neurotransmitter(s) that it affects (where appropriate, remember to note if a specific receptor type is involved)

1. morphine (3 points)

2. reserpine (3 points)

3. belladonna alkaloids (e.g., atropine) (3 points)

In answers 4-6 tell me 3 different cellular mechanisms (one per question) by which a drug or other external manipulation could produce an agonistic effect on a neurotransmitter system (you may repeat a mechanism involved in questions 1-3). For each of the preceding mechanisms, give me:

a) the mechanism, of course (DO NOT NAME A NEUROTRANSMITTER OR ANYTHING SPECIFIC TO A NEUROTRANSMITTER WHEN YOU NAME A MECHANISM--DON'T DO IT!!!!!  JUST NAME THE NON-NEUROTRANSMITTER-SPECIFIC MECHANISM.)

b) a drug (or manipulation) that has that effect (you MAY NOT use those mentioned in questions 1-3) and

c) the neurotransmitter(s) affected by "b" (where appropriate, remember to note if a specific receptor type is involved).

4. a) mechanism, b) drug (or manipulation), c) neurotransmitter(s) (3 points)

5. same as 4, but a different mechanism (3 points)

6. same as 4, but a different mechanism (3 points)