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.
The efferents from the dorsal motor nucleus of the vagus go down and innervate the heart, lungs, and gastrointestinal tract. The smooth muscles contract to facilitate respiration and peristalsis. Vagus nerve stimulation also causes bradycardia [4, 5].