1Synaptic Gap
a tiny space between the axon terminal of one neuron and the dendrite of an adjoining neron
2Synapse
space between two neurons
3Neurotransmitter
a chemical messenger that travels across the synapse from one neuron to the next and influences wheter a neuron will generat and action potential
4Presynaptic neuron
the neuron that sends the signal across the gap
5Postsynaptic neuron
a neuron on the receiving end of a synapse
6Excitatory effect
a neurotransmitter effect that makes it more likely that the receiving neuron will generate an action potential
7Inhibitory effect
a neaurotransmitter effect taht makes it less likely that the receiving neuron wil generate an action potential(impulse)
8Synaptic buttons
a small structure like a sac that stores chemicals called neurotransmitters
9Acetylcholine
a neurotransmitter that triggers muscle contraction and affects learning and memory
10Norepinephrine
neurotransmitter that is involved in arousal and the fight-or-flight system (also mood, sleep, and learning)
11Dopamine
neurotransmitter involved in regulating emotions, speficically rewarding sensations. Also involved in movement, with links to Parkinson's disease.
12Serotonin
affects mood, hunger,sleep, and arousal. undersupply linked to depression
13Endorphins
neurotransmitters that give one a feeling of well-being, euphoria or eliminate pain