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.
Answer by Peakay Tea. Confidence votes 50.7K. Peristalsis is a distinctive pattern of smooth muscle contractions that propels food through the esophagus and intestines. radially symmetrical contraction and relaxation of muscles which propagates in a wave down a muscular tube, in an anterograde fashion.