試題詳解

8. Which of the following statements regarding muscle contraction is correct?
(A) During muscle contraction, the sarcomere elongates.
(B) During muscle contraction, the I-band lengthens
(C) During muscle contraction, the H-zone becomes shorter
(D) During muscle contraction, the A-band extends
(E) During muscle contraction, the distance between the Z-line and the M-line increases