Neural communication involves different processes within and between neurons. Messages travel within a neuron through _______, but communication between neurons depends on the movement of _______.
Gretchen is watching an action movie on television that involves an archaeologist who hunts for lost artifacts. In one scene he is running through a jungle while being chased by local residents who use blow guns to fire darts at him. He does not know that they have used curare on these darts, which is a very poisonous acetylcholine _______.
Drugs and other substances can alter normal neurotransmission through ________ , which boost normal neurotransmitter activity, and ________ , which block normal neurotransmitter activity.