Anatomy & Physiology Gastrointestinal #8

Question

Which is the term used to document the wave-like movements that propel food and fluids along the digestive tract?

Answers

  1. Mastication
    • Rationale:

      Mastication is the process of chewing. It is not the wave-like movements that propel foods and fluids along the digestive tract.

  2. Defecation
    • Rationale:

      Defecation is the process where feces are discharged from the body. It is not the wave-like movements that propel foods and fluids along the digestive tract.

  3. Peristalsis
    • Rationale:

      Peristalsis is the wave-like movement that moves and propels fluids and food along the digestive tract with the help of muscles. Peristalsis begins in the esophagus and continues throughout much of the alimentary tract.

  4. Stasis
    • Rationale:

      Stasis is defined as a slowdown or stoppage in the flow of blood or other body fluid (e.g., lymph fluid). It is not the wave-like movements that propel foods and fluids along the digestive tract.

Overview

Digestion is defined as the process of breaking down food by both enzymatic and mechanical action in the alimentary (i.e., gastrointestinal) canal into substances that can be used by the body via absorption.

Explanation

Learning Outcomes

One mechanical process that occurs during the digestion process is peristalsis. Peristalsis is defined as the involuntary relaxation and constriction of the muscles in which create wave-like movements that push the contents of the canal forward. Anything that stops peristalsis prevents the passage of food particles, gas, and liquids through the alimentary tract and can lead to obstruction.

Test Taking Tip

Use your knowledge of medical terminology to determine the correct answer choice for this question.

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