BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a signal molecule that transmits nerve impulses across synapses
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neuron
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neurotransmitter
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nerve
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action potential
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Explanation:
Detailed explanation-1: -A neuron sending a signal (i.e., a presynaptic neuron) releases a chemical called a neurotransmitter, which binds to a receptor on the surface of the receiving (i.e., postsynaptic) neuron. Neurotransmitters are released from presynaptic terminals, which may branch to communicate with several postsynaptic neurons.
Detailed explanation-2: -Excitatory. Excitatory neurotransmitters “excite” the neuron and cause it to “fire off the message, ‘’ meaning, the message continues to be passed along to the next cell. Examples of excitatory neurotransmitters include glutamate, epinephrine and norepinephrine.
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