14) Which of these is NOT a way of classifying muscles? A) the type of muscle fibers C) muscle shape 15) Which of the following best describes the orbicularis oris? A) It closes the eye. C) It draws the eyebrows together. B) the type of action they cause D) muscle location 16) Which muscle(s) is (are) contracted to exhale forcibly? A) internal intercostals and rectus abdominus B) rectus abdominis and diaphragm C) diaphragm alone D) external intercostals and diaphragm A) rectus femoris C) the vastus medialis B) It closes, purses, and protrudes the lips. D) It pulls the lower lip down and back. 17) Which of the following muscles serves as a common intramuscular injection site, particularly in infants as the buttocks and arm muscles are poorly developed? B) the vastus intermedius D) the vastus lateralis