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.
Bile helps break down fats in your food. Peristalsis. Digesting food is pushed through the small intestine by peristalsis. Peristalsis is a muscular movement in which alternating waves of muscle contraction and relaxation cause food to be squeezed along the digestive tract.lthough it is longer than your large intestine it has a smaller diameter. This is why it's called the small intestine. Chemical digestion. After food is churned up in your stomach, a sphincter muscle at the end of your stomach opens to squirt small amounts of food into the top of your small intestine.