It took place on the same ground as the First Battle of Bull Run. The battles took place around the city of Manassas, which is in Prince William County, Virginia. These battlâ¦es are also known as the First and Second Manassas.
The involuntary motion that moves food through the alimentary canal is called peristalsis and is a wavelike contraction and relaxation of the intestinal wall smooth muscles. It pushes food along the intestine.
Wave-like contractions of the smooth muscle called peristalsis moves food through the digestive system. The muscles in the lining of these organs contract and relax from abovâ¦e the food which pushes the food downwards. this process works even if you stand upside down.