Examlex
Explain the protection function of the skin,and include the role of the surface film.
Neurotransmitters
Chemical messengers that transmit signals across synapses from one neuron to another in the nervous system.
Neuron
A specialized cell of the nervous system that receives and transmits messages.
Message
A piece of information or communication conveyed from one person or group to another.
Synaptic Cleft
The narrow gap between the terminal end of a neuron and the neighboring neuron or muscle cell, across which neurotransmitters travel.
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