The striated appearance of skeletal muscle is due to the
A) orderly arrangement of the T tubules
B) orderly arrangement of the lateral sacs of the sarcoplasmic reticulum
C) orderly arrangement of the thick and thin filaments into A and I bands
D) orderly arrangement of the motor units
E) presence of white and red muscle fibers within the muscle
Correct Answer:
Verified
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
Q15: Each I band in a skeletal muscle
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
Q21: During contraction of skeletal muscle fibers, the
A)contractile
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