... optical fibers have transformed communication, they are also revolutionizing medicine. These ultra-thin, flexible fibers have opened a window into the living tissues of the body. By inserting optical ... The basic fiber-optics system is called fiberscope, which consists of two bundles of fibers. One, the illuminating bundle, carries light to the tissues. Is is coupled to a high-intensity light ... passage does the author provide a basic description of a fiberscope? A. Lines 1-2 B. Line 5 C. Line 9 D. Line 12 Mark the letter A,B,C, or D on your answer sheet to show the underline part...