The symptoms of bloating can be vague and difficult to pinpoint, but most people describe an uncomfortable feeling of fullness, tightness, or swelling in the abdomen. This can be accompanied by pain, excessive gas (flatulence), frequent burping or belching, and abdominal rumbling or gurgles. The most common causes of abdominal bloating are: 1  swallowing air.  constipation.
The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles.he muscular system in vertebrates is controlled through the nervous system, although some muscles (such as the cardiac muscle) can be completely autonomous.
Internal Organs Systems of a Human Body - I. 1  The muscular system moves and supports the body with the skeletal musculature and the heart muscles. 2  The respiratory systems supplies the body with oxygen.  The cardiovascular systems also known as circulatory system which transports material around the body.