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 Extema is the layer of the digestive tract wall that is responsible for peristalsis.
The middle layer is the muscularis. This consists of smooth muscle. There is an inner longitudinal, middle circular and outer longitudinal layer of smooth muscle. The outer longitudinal layer is not present in the entire ureter. The main function of the muscularis is peristalsis which propels the urine.