Examlex
Cocaine exerts its effect by blocking the re-uptake of neurotransmitter by the neuron so that stimulation is prolonged.
Rhodopsin
A pigment found in the photoreceptor cells of the retina, responsible for the initial step in the perception of light.
Hyperpolarized
The condition of the neuron membrane when the inside of the cell becomes more negative than its resting potential.
GABA
Gamma-Aminobutyric Acid, a neurotransmitter in the brain that inhibits nerve transmission, playing a key role in reducing neuronal excitability throughout the nervous system.
Chemoreceptors
Sensory receptors in organisms that detect chemical stimuli in the environment, playing a key role in taste and smell.
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