1 In-text citations in parenthesis, with only the author's last name and page number included (Smith, p. 4). 2  Double-spaced lines, but with no extra line breaks between each citation. 3  Footnotes (superscripted) also used to provide non-essential information.
Muscularis Extema is the layer of the digestive tract wall that is responsible for peristalsis.
Peristalsis is the contractions and the relaxations made by the muscles of the body especially by the muscles of the alimentary canal. Peristalsis is important for the movemenâ¦t of food through the oesophagus (so that the food can reach the stomach) and the large intestine (for prevention of constipation).