"Nat. ECF ICF Na 150 mM 50 mM K+ 50 mM 150 mM

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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Does the membrane potential increase or decrease?
5. A group of cells in the body have a resting membrane potential of -65 mV. When a signal
opens non-specific cation channels in the cell membranes, the amount of Na* entering the
cells (Na" influx) is greater than the amount of K* leaving the cells (K eflux). The ECF and
ICF concentrations of Na+ and K+ are shown in the table below. Explain what causes net
entry of Na+.
ECF
ICF
Na+
150 mM 50 mM
K+
50 mM 150 mM
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Transcribed Image Text:Does the membrane potential increase or decrease? 5. A group of cells in the body have a resting membrane potential of -65 mV. When a signal opens non-specific cation channels in the cell membranes, the amount of Na* entering the cells (Na" influx) is greater than the amount of K* leaving the cells (K eflux). The ECF and ICF concentrations of Na+ and K+ are shown in the table below. Explain what causes net entry of Na+. ECF ICF Na+ 150 mM 50 mM K+ 50 mM 150 mM Add a caption Liv shared with you > Sunday · Oct 3, 2021 • 10:00 AM Adjust O IMG_8722 Screenshot JPEG No lens information 3 MP • 1125 × 2436 • 248 KB Add a location... Show in All Photos
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