Relatively high velocity (speed) action potential propagation is a feature of axons that have which of the following:     a. additional mitochondria     b. reduced absolute refractory period     c. fewer potassium channels     d. a myelin sheath

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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  1. Relatively high velocity (speed) action potential propagation is a feature of axons that have which of the following:
       
    a. additional mitochondria
       
    b. reduced absolute refractory period
       
    c. fewer potassium channels
       
    d. a myelin sheath
  1. Which effect listed below would characterize the drug as a serotonin agonist?
       
    a. Stimulating monoamine oxidase to reduce available serotonin
       
    b. Binding and activating a postsynaptic serotonin receptor
       
    c. Increasing the efficiency of a serotonin transporter
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