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.
1 As a result of segmentation; a process by which some physical digestion occurs in the small intestine, the chime sloshes back and forth between segments of the small intestine that form when bands of circular muscle briefly contract.2  A helpful animation that outlines the process of peristalsis and segmentation. This image illustrates the segmentation of the chyme that occurs within the small intestine of the digestive tract. 2  Segmentation is the process of mixing the food contents in the digestive tract to create a more uniform mixture throughout.