About This Chapter
CSET Human Physiology: Digestion - Chapter Summary
This chapter can be used to develop your familiarity on concepts related to how the digestion system works with the rest of the human body. You will find that our video lessons cover topics that include:
- The upper and lower gastrointestinal tract
- Function of the pancreas
- Role of the gallbladder and liver in digestion
When you finish this chapter, you will be familiar with the processes for carbohydrate, protein and lipid digestion and absorption. We provide you short, easy-to-digest video lessons that come with supplementary quizzes to test your comprehension on digestion. Use the quiz scores to determine which areas you need to spend more time studying.
CSET Human Physiology: Digestion Objectives
The CSET Science test consists of three subtests. The first two subtests cover general science concepts. Both subtests have two constructed-response and 58 multiple-choice questions. The last subtest requires you to answer three constructed-response and 50 multiple-choice questions. In the third subsection, you can choose to focus the test questions on Earth/planetary science, physics, biology/life science or chemistry. The biology/life science specialized subtest contains questions covered by our CSET Human Physiology: Digestion chapter.
The human digestive system questions featured on the biology/life science subtest assess your knowledge on how the digestive system interacts with the rest of the major body systems to help remove bodily waste and transport nutrients and oxygen to cells. Another test objective is to score you on your understanding of how the digestive system is used in the role of hormones.
1. Digestive System I: The Upper Gastrointestinal Tract
Did you know that there are digestive enzymes in your saliva? It's true. As soon as you put a piece of food in your mouth, the digestive process begins. Join us with this first of two lessons about the human digestive system, where we'll follow food through the upper gastrointestinal tract from the mouth through the stomach.
2. Digestive System II: The Lower Gastrointestinal Tract
The lower gastrointestinal tract is the part of the digestive system that is responsible for the last part of food digestion and the expulsion of waste from the body. In this lesson, we'll look at each part of the system and what functions each serves in the process of digestion.
3. What Is the Pancreas? - Function, Enzymes & Role in Digestion
Your pancreas plays an important role in the digestion of food. In this lesson, you will learn about the enzymes found in pancreatic juice that allow your body to break down carbohydrates, proteins and fats.
4. The Gallbladder & Liver: Function & Role in Digestion
Bile is produced by the liver and stored in the gallbladder. In this lesson, you will learn about bile and its role in the breakdown of dietary fats. You will also learn how the hormones secretin and cholecystokinin help regulate these organs.
5. 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.
6. 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.
7. 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.
8. 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.
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