Examlex
____ controls provide great flexibility in terms of their design.
Acetylcholine
A neurotransmitter in the nervous system that plays complex roles in transmitting nerve impulses at synapses, including muscle stimulation, attention, arousal, and memory.
Norepinephrine
A neurotransmitter and hormone involved in the body's "fight or flight" response, regulating heart rate, blood pressure, and sugar levels.
Agonist
A chemical or drug that binds to receptors in the brain and causes a reaction or response similar to a naturally occurring substance.
Absolute Refractory Period
a period immediately following the transmission of a nerve impulse when a neuron is not responsive to stimulation from another impulse.
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