Examlex
A natural monopoly occurs when a single firm can produce the entire output of the market at a lower average cost than could many firms.
Synaptic Receptors
Protein molecules on the surface of neurons where neurotransmitters bind to transmit signals across synapses.
Active Ingredient
The component of a medication, herb, or concoction that is biologically or pharmacologically responsible for its effects.
Inhibitory Neurotransmitters
Neurotransmitters that decrease the probability of the neuron firing action potentials, thereby reducing neural activity.
Excitatory Neurotransmitters
Chemical messengers in the nervous system that increase the likelihood that a neuron will fire an action potential.
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