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.
When you eat a meal, the food moves through your gastrointestinal tract via a wave-like movement known as peristalsis. Another type of movement, segmentation, occurs mostly in your large and small intestines and is thought to facilitate absorption of nutrients; how segmentation works has remained a mystery. It had been theorized that alternate excitation and inhibition from the enteric nervous system was responsible for segmentation.