Which of the following describes a similarity between cardiac and smooth muscle cells?a. An action potential always precedes contraction.b. The majority of the Ca21 that activates contraction comes from theextracellular fluid.c. Action potentials are generated by slow waves.d. An extensive system of T-tubules is present.e. Ca21 release and contraction strengths are graded

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
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Which of the following describes a similarity between cardiac and smooth muscle cells?
a. An action potential always precedes contraction.
b. The majority of the Ca21 that activates contraction comes from the
extracellular fluid.
c. Action potentials are generated by slow waves.
d. An extensive system of T-tubules is present.
e. Ca21 release and contraction strengths are graded

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