Large Area Listening Systems. Large area listening systems are the most popular of all hearing enhancement devices, and are used in theaters, movie houses, auditoriums and houses of worship. There are three basic types: FM radio, infra-red (IR) light and a looped wire around the room, called an induction loop.
The strings are called Phloem Bundles (pronounced flom). They are part of the system that carries nutrition to all parts of the banana.
Best Answer: This may be an allergic reaction to bananas. There is a protein in bananas called chitinase that can cause an allergy reaction, which can include stomachaches and stomach pain. Chitinase is also found in avocados and kiwifruit. Banana intolerance can also be caused by something called vaso-active amines. These are histamines-like chemicals that can mimic an allergic reaction. The vasoactive amine in bananas is serotonin, and this can cause abdominal cramping.