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.
Control of Movement through the Small Intestine. A number of hormonal and nervous factors initiate and maintain peristalsis and mixing. Nerve impulses which travel throughout the small intestine are triggered by the gastroenteric reflex (refer to Defecation Reflex) and localized distention of the duodenum.