18. Which of the following statements is TRUE? A. The serratus anterior rotates the scapula upward.
B. The pectoralis minor rotates the scapula downward.
C. The serratus anterior and pectoralis minor abduct the arm.
D. All of the above

If you were running a marathon, which type of muscle fibers would be most useful to you? a. slow-twitch b. fast-twitch, type i a c. intermediate-twitch, type ii b d. slow-intermediate twitch, type i b select the best answer from the choices provided. a b c d