The T tubules
A) form the Z lines.
B) store Ca2+.
C) provide a means of rapidly transmitting the action potential to the central portions of the muscle fiber.
D) allow for nutrients to be carried into the cell.
E) none of these answers.
Correct Answer:
Verified
Q19: Thin filaments in skeletal muscle are composed
Q20: The striated appearance of skeletal muscle is
Q21: Of the step in excitation-contraction below, which
Q22: The sarcolemma
A) is the muscle cell plasma
Q25: Binding of _ to myosin permits cross-bridge
Q26: This structure provide a means of rapidly
Q27: During contraction, asynchronous cycling of crossbridges
A) prevents
Q28: Sequence the following events involved in muscle
Q29: Which is characteristic of cross bridges?
A) they
Q37: An action potential rapidly spreads to the
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