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.
esophagus during peristalsis, (2) is the contraction coordinated in any way with peristaltic contraction of the circular muscle, (3) why does longitudinal muscle contract during esophageal peristalsis, and (4) are there benefits to longitudinal muscle contraction that are of sufficient importance to explain the existence of a longitudinal