An antibody test on smooth muscle reveals fewer dense bodies and intermediate filaments in a patient with a colon disorder. What is the purpose of these structures?
A) They allow for rapidly developing action potentials in smooth muscle cells.
B) They are shallow invaginations of plasma membrane.
C) They maintain relatively constant tension in smooth muscle for a period of time.
D) They are part of the intracellular cytoskeleton.
E) They act as enzymes that remove phosphate from myosin.
Correct Answer:
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Q147: Functionally, smooth muscle
A) is well adapted to
Q148: In smooth muscle, most of the Ca2+
Q149: Maureen is hiking in the cold, and
Q150: Myosin phosphatase
A) activates myosin kinase.
B) forms the
Q151: Smooth muscle
A) responds in an all-or-none fashion.
B)
Q153: Multiunit smooth muscle is located in the
A)
Q154: Smooth muscle is regulated by all of
Q155: What are caveolae?
A) Ion channels that allow
Q156: Select the phrase that does not belong
Q157: In smooth muscle, cross-bridging occurs due to
A)
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