The T tubules
A) store Ca2+
B) provide a means of rapidly transmitting the action potential from the surface into the central portions of the muscle fiber
C) store ATP
D) run longitudinally between the myofibrils
E) have expanded lateral sacs
Correct Answer:
Verified
Q18: Myosin is
A) spherical
B) attached to tropomyosin
C) a
Q19: Order the following muscle cell components from
Q20: Muscle fibers develop tension by
A) contraction of
Q21: The H zone
A) is the area within
Q22: Of the steps in excitation-contraction below, which
Q25: Which is not characteristic of cross bridges?
A)
Q26: During contraction, asynchronous cycling of crossbridges
A) prevents
Q27: Which molecules are involved with regulation of
Q28: Which of the following changes in banding
Q29: Cross bridge interaction between actin and myosin
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