Neuronal function is driven by
a. nodes of Ranvier. c. repolarization–depolarization cycles.
b. saltatory conduction. d. depolarization–repolarization cycles.
D
Neuronal function is driven by depolarization–repolarization cycles, similar to that described for cardiac physiology. Myelinated fibers use a process called saltatory conduction to support rapid axonal transmission of nerve impulses. Structurally, axons participating in this form of impulse transmission are laid out with a noncontinuous myelin cover, interrupted with 2-micrometer bare segments called the nodes of Ranvier.
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Which instructions should be included as part of a teaching plan for a client with hypertroph-ic cardiomyopathy (HCM)?
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A group of nurse practitioners is opening a clinic. During a preliminary meeting, they assess their external environment for threats and opportunities. Which of the following would they consider a threat?
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In order to attribute causality of a posttest measure in an experimental study, the independent variable will be
a. administered to control group subjects only. b. administered to subjects selected by the researcher. c. administered to treatment group subjects. d. defined loosely to avoid bias.
The nurse is teaching the parents of a 4-year-old boy about the normal maturation of the child's organs during the preschool years and their effect on body functions. Which statements accurately describe these changes? Select all that apply
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