Match the items. the task is to match the lettered items with the correct numbered items. appearing below is a list of lettered items.

following that is a list of numbered items.

each numbered item is followed by a drop-down.

select the letter in the drop down that best matches the numbered item with the lettered alternatives.

a. effect the central and peripheral nervous sytems

b. effect adrenergic nerves in the heart

c. effect the vascular system

d. has the widest range of effects

1. antiadrenergic blocking drugs

2. beta-adrenergic blocking drugs

3. alpha adrenergic blocking drugs

4. alpha/beta adrenergic blocking drugs