7.2 Basics: Gastrointestinal System Review

Open Resources for Nursing (Open RN)

Overview of Gastrointestinal System and Processes

There are several supplementary sources you can use to review anatomy and physiology information that is important to know to understand how GI medications work. Figure 7.1[1] illustrates the anatomical components of the gastrointestinal system. Links are provided below to the OpenStax Anatomy and Physiology book for further details regarding the following selected areas: overview of the digestive system, digestive system processes and regulation, the stomach, the small and large intestines, and chemical digestion and absorption. Box 7.2 contains links to supplementary videos further explaining the gastrointestinal system and digestive system. Medications related to hyperacidity, bowel disorders, and nausea and vomiting will be discussed in this chapter with reference to how they target pathophysiological concepts related to these organs and processes.

Illustrations showing labeled components of the GI system on a human torso
Figure 7.1 Components of GI System

Links to Open Stax A&P detailed content related to this module:[2]

Overview of the Digestive System

Digestive System Processes and Regulation

The Stomach

The Small and Large Intestines

Chemical Digestion and Absorption: A Closer Look


Box 7.2 – Video links reviewing the gastrointestinal system and digestive processes

Gastrointestinal System Review


Ted Ed review of digestive system


Khan Academy review of GI system


  1. "Components of the Digestive System" by CNX OpenStax is licensed under CC BY 4.0 Access for free at https://openstax.org/books/anatomy-and-physiology/pages/23-1-overview-of-the-digestive-system
  2. This work is a derivative of Anatomy and Physiology by OpenStax licensed under CC BY 4.0. Access for free at https://openstax.org/books/anatomy-and-physiology/pages/1-introduction
  3. Forciea, B. ( 2015, March 18). Anatomy and Physiology of the Digestive System [Video]. YouTube. All rights reserved. Video used with permission. https://youtu.be/1ssJV-EpfiQ.
  4. Bryce, E. (2017, December 14). How Your Digestive System Works. [YouTube].  https://youtu.be/Og5xAdC8EUI.
  5. Meet the Gastrointestinal Tract! by Raja Narayan is licensed under CC BY-NC-SA 3.0


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Nursing Pharmacology Copyright © 2020 by Open Resources for Nursing (Open RN) is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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