there are three chambers to the lungs and to listen to all of them efficiently-the dr has to put the stethoscope in 4 different places. once on your upper back (near your shoulder blades), once on the sides of your waist, once on your lower back and then in the front at the center of your chest which is close to your heart.
Bloating can be caused by too much gas in the intestines, although you can also feel bloated and have a normal amount of gas. You can also feel bloated if you have an intestinal disorder, such as irritable bowel syndrome (IBS), which makes you more sensitive to the presence of gas in your intestines.
Diet is the main cause of stomach bloating. Food that is high in fructose or fats needs more enzymes to break it down. The stomach acids may not be able to break them down, resulting in gas production. Other foods also are not totally digested and can lead to gas and bloating.