In Depth: Muscles. The major muscle in the chest is the pectoralis major. This large fan-shaped muscle stretches from the armpit up to the collarbone and down across the lower chest region on both sides of the chest. The two sides connect at the sternum, or breastbone.
Listen for bowel sounds for atleast 1 min in each quadrant and you should hear anywhere from 5-30 bowel sounds in each quadrant. If you don't hear anything or (0-4 bowel sounds) in a quadrant after 1 minute listen for a full 5 min. 0 to 4 bowel sounds heard in 5 min are called hypoactive Bowel sounds, more than 30 bowel sounds in a minute are called hyperactive... Hope this helps you ;--) May 14, '09.
Auscultate for bowel sounds and bruits. Next, use the diaphragm of your stethoscope to auscultate bowel sounds. You should be able to hear bowel tones in all four quadrants of the abdomen, so perform the auscultation systematically. Many nurses start in the right lower quadrant, since bowel tones are usually active around the ileocecal valve, which is in that quadrant.