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April Iris De Guzman
Physiology Week 7: Nerve Signaling
| Question | Answer |
|---|---|
| True or False: Dopamine, epinephrine, and norepinephrine are classified as catecholamines. | True |
| The fastest nerve fibers in the body can conduct an impulse that is how much faster than the slowest fibers in the body? | almost 300 times faster |
| Which of the following antidepressants acts by blocking the action of monoamine oxidase (MAO)? Amitriptyline, Phenelzine, or Imipramine? | Phenelzine |
| The fastest nerve fibers in the body can conduct impulses up to approximately _____ meters per second. | 130 |
| True or False: No impulse can be sent through a neuron during the absolute refractory period. | True |
| Compared with the outside of the neuron, the inside has a(n) ____ charge. | negative |
| The only ions that can diffuse across a neuron’s membrane when the neuron is at rest is | potassium |
| It is called the movement of the membrane potential away from zero (below the usual RMP). | hyperpolarization |
| A membrane that exhibits a membrane potential is said to be | polarized |
| True or False: When neurotransmitters from synaptic knobs stimulate a postsynaptic neuron in rapid succession, their effect can add up over a brief period to produce an action potential. This is called spatial summation | False |
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irisdeguzman
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