The H zone
A) is the area within the middle of the A band where the thin filaments do not reach
B) shortens or disappears during contraction
C) contains only thick filaments
D) is in the middle of the A band
E) all of these
Correct Answer:
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Q16: The striated appearance of skeletal muscle is
Q17: The smallest unit of contraction within a
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
Q22: Of the steps in excitation-contraction below, which
Q23: The T tubules
A) store Ca2+
B) provide a
Q25: Which is not characteristic of cross bridges?
A)
Q26: During contraction, asynchronous cycling of crossbridges
A) prevents
Q29: Cross bridge interaction between actin and myosin
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