A drug is found to partially inactivate fast sodium channels. Mow would this drug change the action potential in a ventricular myocyte? How would the drug affect conduction velocity within the ventricle?

A drug is found to partially inactivate fast sodium channels. Mow would this drug change the action potential in a ventricular myocyte? How would the drug affect conduction velocity within the ventricle?

Biomedical Instrumentation Systems

1st Edition

ISBN:9781133478294

Author:Chatterjee

Publisher:Chatterjee

Chapter2: Anatomy And Physiology

Section: Chapter Questions

Problem 3P

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Concept explainers

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.

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A drug is found to partially inactivate fast sodium channels.

Mow would this drug change the action potential in a ventricular myocyte?

How would the drug affect conduction velocity within the ventricle?

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