Human Physiology: An Integrated Approach (8th Edition)
Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 6.2, Problem 12CC

(a)

Summary Introduction

To determine: Whether a cell depolarize or hyperpolarize when Cl- channel opens.

Introduction: Polarization is the electric difference across the cell membrane. It is the process of producing positive and negative electric charges inside the cell with respect to the surroundings.

(b)

Summary Introduction

To determine: Whether a cell depolarize or hyperpolarize when K+ channel opens.

Introduction: Resting potential of a cell is -70 mV. When resting potential alters, the cell either becomes hyperpolarize or depolarize. It becomes more negative or more positive.

(c)

Summary Introduction

To determine: Whether a cell depolarize or hyperpolarize when Na+ channel opens.

Introduction: At rest, a neuron has a resting potential of -70 mV. This states that inside of the cell is more negatively charged than the surrounding. When resting potential increases or decreases, a neuron transmits the message.

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Why do cells that are not electricallyactive contain voltage-gated ionchannels?
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What is the difference between a ligand-gated channel (like H1 or the AChR) and a voltage gated channel?

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Human Physiology: An Integrated Approach (8th Edition)

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