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.
How early you can hear a heartbeat will vary slightly based upon the development of the baby. In general, using an obstetrics ultrasound, you will be able to hear your baby's heartbeat when you are about 8 weeks pregnant. Or you may be able to hear the heartbeat during regular prenatal care visit at 10 weeks, or more commonly at 12 weeks, with a fetal Doppler.