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Gastrointestinal Tract: The Basics 

Gastrointestinal Tract: The Basics
Gastrointestinal Tract: The Basics

Sidney Z. Brejt

, and Sophie Chheang

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date: 23 September 2020

The primary goal of this chapter is to provide an overview of the anatomy and physiology of the gastrointestinal (GI) tract, which will form the basis for the upcoming chapters on both vascular and nonvascular interventions. Normal, variant, and postsurgical findings will be discussed, and when pertinent, unique disease states as well. In addition, secretory enzymes and hormones will be discussed and their mechanism of action elucidated. The GI tract is responsible for the ingestion, digestion, and absorption of nutrients. Cumulatively, it receives the largest intra-abdominal blood supply. Understanding the anatomy, physiology, histology, and pathology of the GI tract is vital to the interventional radiologist in order to provide optimal patient treatment while avoiding complications.

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