Which of the following is a possible anatomical barrier to the success of an infiltration technique?

The primary direction of fibers in most muscles of the posterior hip and thigh is ________

a. superior to inferior b. inferior to superior c. lateral to medial d. medial to lateral

When he is assessing a 3-year-old child for possible injuries after the child fell down a flight of stairs, which of the following would raise the EMT's suspicion that the child may be a victim of physical abuse?

A) The child cries when you palpate his arm. B) Several bruises are located on his knees and shins. C) The child is fearful and appears malnourished. D) Bruises are found on his chest and abdomen.