Pls help **Question:**An action potential reaches a cardiac contractile cell, which fires, but then does not propagate the signal to the rest of its neighboring cardiac contractile cells. What would cause the action potential to fizzle out without being propagated to the neighboring contractile cells?**Options:**A) Removal of the gap junctions in the intercalated discsB) Removal of the neuromuscular junctionC) Removal of chloride ions from the pacemaker cellsD) Removal of potassium ions from the pacemaker cellsE) None of these answers are correctF) Removal of calcium ions from the pacemaker cells

Answered: An action potential reaches a cardiac…

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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The heart muscle (also called the heart muscle or myocardium) is one of three types of spinal muscle tissue, the other two being skeletal muscle and smooth muscle. It is a voluntary, boring muscle that forms the major tissues of the heart wall.

The muscles of the heart muscle form the muscles around the heart. With muscle activity that causes the circulation of blood throughout the body, unlike skeletal muscle, movement is not involved in supporting health.