22. State the channels involved during an action potential in cardiac CONTRACTILE cells and then describe in which direction each ion moves across the channel when the channel fully opens. Channel 1. 2. 3 lon? Influx or Efflux?

22. State the channels involved during an action potential in cardiac CONTRACTILE cells and then describe in which direction each ion moves across the channel when the channel fully opens. Channel 1. 2. 3 lon? Influx or Efflux?

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter40: The Circulatory System

Section: Chapter Questions

Problem 11RQ: The heart's internal pacemaker beats by: an internal implant that sends an electrical impulse...

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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.

Question

22. State the channels involved during an action potential in cardiac CONTRACTILE
cells and then describe in which direction each ion moves across the channel when
the channel fully opens.
Channel
2.
3.
4.
lon?
Influx or Efflux?

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