"The synapses in Dr. Kovac's brain must be changing and I can really see a physical change now. It looks like he's growing a beak! But the Humanoids have more questions." (Dr. Bruce Grey)
QUESTION:
When a neurotransmitter crosses a synapse, it can either excite or __________ the adjacent neuron or muscle.
![[ Level 4 ]](cs4_biolevel_1_5.jpg)
