About This Chapter
Digestion and Nutrient Absorption - Chapter Summary
The lessons in this chapter will teach you about the digestion of various types of foods and nutrients. Our instructors explain how the nutrients are absorbed into the body and what happens afterwards. Diseases and malfunctions of the digestive system are covered, too.
This chapter also explores the human gut microbiome as well as how prebiotics and probiotics function in the gastrointestinal tract. At the end of this chapter, you should be able to:
- Explain how the body digests lipids, protein, carbohydrates and fiber
- Relate the process of absorption into the bloodstream and lymphatic system
- Identify how nutrients are transported in the body
- Look at health issues related to digestion
- Describe how the microbiome, prebiotics and probiotics function in digestion
The lessons in this chapter are taught by experts in the field who know how to make learning fun. In addition to the videos, you find written transcripts of each lesson, with key terms highlighted. At the end of each lesson are self-assessment quizzes that allow you to gauge your learning.
1. Carbohydrate Digestion and Absorption: Process & End Products
Carbohydrates that you eat are broken down to monosaccharides by enzymes in your digestive tract. In this lesson, you will learn about these digestive enzymes and how monosaccharides are absorbed out of the digestive tract.
2. Chemical Digestion of Carbohydrates: Definition & Process
Carbohydrates are an important energy source, but must be broken down to be absorbed out of the digestive tract. In this lesson, you will learn how disaccharides and polysaccharides are broken down to monosaccharides through a process called hydrolysis.
3. Lipids Digestion and Absorption
Lipids, or fats, are digested and absorbed in the small intestine. In this lesson, you will learn how bile salts emulsify fat so pancreatic lipase can digest it. You will also learn how fats first enter lymphatic capillaries, called lacteals, before entering your blood circulation.
4. Protein Digestion and Absorption Process
Protein is one of the primary nutrients your body uses to build cellular structures. In this lesson, you will learn how protein is broken down into amino acids within your digestive tract and how amino acids are absorbed out of the intestines and into the hepatic portal system.
5. How Fiber is Digested by the Body
In this lesson, you will learn how and where fiber is digested in your body. You will also gain a clear understanding of the different types of fiber and their potential health benefits.
6. Absorption of Micronutrients and Water into the Bloodstream
In this lesson, you will gain a deeper understanding of how and where absorption of micronutrients and water take place in your body. You will also learn how and where it enters your bloodstream.
7. Absorption of Nutrients to the Lymphatic System
In the lesson, we will explore the lymphatic system and how it functions. You will learn about the parts of your body that make up your lymphatic system and what nutrients are absorbed there.
8. How are Nutrients Transported Around the Body?
There are specific steps involved in nutrient transportation to ensure that your body gets what it needs to function properly. This lesson explores how nutrients are transported throughout your body.
9. Gastrointestinal Health & Digestive Problems
In this lesson, you will learn about digestive health, your gastrointestinal tract and what you can do to keep it healthy. You will also learn about symptoms of common digestive problems.
10. The Role of the Human Gut Microbiome
There is a community of microscopic organisms that resides in the human digestive tract. This community is known as the human gut microbiome. Learn how it benefits the body by fermenting undigested carbohydrates and making vitamins.
11. What Are Prebiotics & Probiotics? - Role in the GI Tract
Prebiotics and probiotics help grow the community of beneficial bacteria living in the GI tract. These bacteria promote colon health and contribute to your overall well-being. Learn how prebiotics and probiotics are obtained and how they benefit you.
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Other chapters within the Certified Nutrition Specialist (CNS): Test Prep & Study Guide course
- Fundamental Principles of Nutrition
- Life Cycle Stages & Nutrition
- Energy Balance & The Body
- The Chemical Composition of Nutrients
- Nutritional Biochemistry
- Nutrition-Related Physiology
- Metabolism of Nutrients
- Carbohydrates in Health & Nutrition
- Protein's Role in Nutrition
- Lipids in Health & Nutrition
- Vitamins in Nutrition
- Minerals in Health & Nutrition
- Symptoms of Mineral Deficiency & Toxicity
- Meeting Nutrient Requirements
- Nutritional Assessment
- Clinical Intervention & Monitoring
- Drug & Nutrient Interactions
- Dietary Therapeutics & Behavior Optimization
- The Risk of Eating Disorders to Nutrition
- Professional Issues in Nutrition
- Certified Nutrition Specialist Flashcards