Each I band in a skeletal muscle fiber includes
A) overlapping thin and thick filaments
B) thick filaments and one Z disc
C) thin filaments and one Z disc
D) thin filaments and two Z discs
E) actin, troponin, tropomyosin and two Z discs
Correct Answer:
Verified
Q10: Skeletal muscle fibers
A)are some of the longest
Q11: Identify the characteristic(s) shared by all types
Q12: The functional unit of skeletal muscle
A)is the
Q13: Sarcomeres are arranged end to end as
A)Z
Q14: A function of tropomyosin is
A)to bind Ca₂₊
B)to
Q16: The striated appearance of skeletal muscle is
Q17: Muscle fibers develop tension by
A)contraction of sarcomeres
B)shortening
C)the
Q18: Actin
A)does not perform a power stroke during
Q19: Cross bridges
A)bind to actin during muscle contraction
B)are
Q20: During contraction of a sarcomere,
A)the Z discs
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