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: The muscularis is responsible for segmental contractions and peristaltic movement in the GI tract. The muscularis is composed of two layers of muscle: an inner circular and outer longitudinal layer of smooth muscle.
Where Does Peristalsis Occur. Peristalsis occurs throughout the digestive tract. It begins with the primary peristaltic wave in the esophagus as you swallow food from your mouth to the stomach.As food enters your stomach these muscular movements continue right through to your anus, where waste is eliminated from the body.n simplistic terms, it means moving food and liquids within the body from one place to another. These rhythmic, wave-like movements are created by peristaltic muscle contractions which are located within the walls of your digestive tract.