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You are recording the resting membrane potential from a neuron placed in a petri dish. The following oscilloscope tracing shows the voltage measured when a microelectrode tip is placed just inside the axon. The solid line on the oscilloscope is obtained when the neuron is placed in a control solution containing 5mM K+ and 150 mM Na+. The solution is then changed and a second recording is made, shown by the dashed line on the tracing. You can reasonably conclude this new solution: Membrane Potential (mv) 40 20 0 -20 -40 -60 -80 0 1 2 3 4 6 Time (sec) 7 8 Ohas decreased concentration of K+ Ohas decreased concentration of Na+ Ohas increased concentration of K+ has increased concentration of Na+ 9 10

You are recording the resting membrane potential from a neuron placed in a petri dish. The following oscilloscope tracing shows the voltage measured when a microelectrode tip is placed just inside the axon. The solid line on the oscilloscope is obtained when the neuron is placed in a control solution containing 5mM K+ and 150 mM Na+. The solution is then changed and a second recording is made, shown by the dashed line on the tracing. You can reasonably conclude this new solution: Membrane Potential (mv) 40 20 0 -20 -40 -60 -80 0 1 2 3 4 6 Time (sec) 7 8 Ohas decreased concentration of K+ Ohas decreased concentration of Na+ Ohas increased concentration of K+ has increased concentration of Na+ 9 10

Human Anatomy & Physiology (11th Edition)
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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You are recording the resting membrane potential from a neuron placed in a petri dish. The following oscilloscope tracing shows the voltage measured when a microelectrode tip is placed just inside the axon. The solid line on the oscilloscope is obtained when the neuron is placed in a control solution containing 5mM K+ and 150 mM Na+. The solution is then changed and a second recording is made, shown by the dashed line on the tracing. You can reasonably conclude this new solution: Membrane Potential (mV) 989 20 -80 HORRETAN 0 1 2 3 4 5 6 7 8 9 10 Time (sec) has decreased concentration of K+ Ohas decreased concentration of Na+ has increased concentration of K+ 1. has increased concentration of Na+
Transcribed Image Text:You are recording the resting membrane potential from a neuron placed in a petri dish. The following oscilloscope tracing shows the voltage measured when a microelectrode tip is placed just inside the axon. The solid line on the oscilloscope is obtained when the neuron is placed in a control solution containing 5mM K+ and 150 mM Na+. The solution is then changed and a second recording is made, shown by the dashed line on the tracing. You can reasonably conclude this new solution: Membrane Potential (mV) 989 20 -80 HORRETAN 0 1 2 3 4 5 6 7 8 9 10 Time (sec) has decreased concentration of K+ Ohas decreased concentration of Na+ has increased concentration of K+ 1. has increased concentration of Na+
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