Anatomy & Physiology Gastrointestinal #3

Question

Which is the product of starch digestion that is used by the body for fuel?

Answers

  1. Glucose
    • Rationale:

      Sugar, including glucose, is a product of carbohydrate and starch digestion. This product is then absorbed during the digestive process and used for energy by the body.

  2. Glycerol
    • Rationale:

      Glycerol is a product of fat, not starch, digestion that is absorbed by the body during the process of digestion.

  3. Fatty acid
    • Rationale:

      Fatty acids are a product of fat, not starch, digestion that is absorbed by the body during the process of digestion.

  4. Amino acid
    • Rationale:

      Amino acids are a product of protein, not starch, digestion that is absorbed by the body during the process of digestion.

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

Amylase, a substance in saliva, works to break carbohydrate and starch molecules into smaller disaccharide building blocks, including glucose. Once food is swallowed, it enters the stomach, where strong gastric juices continue the digestive process. Digestion is completed in the small intestine.

Test Taking Tip

Consider the components of carbohydrates when determining the correct answer choice for this question.

Video Rationale