Excitatory synapses
A) force negatively charged ions into neurons.
B) exist only outside the brain.
C) bring neurons closer to the firing threshold.
D) hyperpolarize neurons.
Correct Answer:
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Q18: A punch is painful, while a hug
Q19: Which of these events occurs first during
Q20: During an action potential
A) the inside of
Q21: Neurons are more likely to fire when
Q22: The voltage difference across a neuron's membrane
A)
Q24: Action potentials travel at speeds
A) near the
Q25: All of the following are reasons action
Q26: A neuron's refractory phase is defined as
Q27: The key purpose of myelin is to
A)
Q28: Myelinated axons are useful because they
A) prevent
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