Phase Peak Phase Falling Phase Q2. Phases of the action potential Rising Phase membrane is depolarizing as Na+ enters the cell; the membrane is still well below the reversal potential for Na+ Undershoot Phase What is happening in the membrane? Na+ conductance Na+ conductance sharply increases; it has fast kinetics when membrane depolarizes K+ conductance very little K+ conductance

Phase Peak Phase Falling Phase Q2. Phases of the action potential Rising Phase membrane is depolarizing as Na+ enters the cell; the membrane is still well below the reversal potential for Na+ Undershoot Phase What is happening in the membrane? Na+ conductance Na+ conductance sharply increases; it has fast kinetics when membrane depolarizes K+ conductance very little K+ conductance

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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