About This Chapter
Anatomy of the Digestive System - Chapter Summary
The human body consists of multiple systems, with each system running around the clock as we perform our daily activities. These lessons provide focused information concerning the anatomy of the digestive system, including details about the functions and structures of the different parts within this system. By successfully going through or reviewing this chapter, you should be all set to do the following:
- Explain the basic functions of the upper and lower gastrointestinal tracts
- Point out the three main types of movement occurring in the small intestine
- Review the role of the small intestine concerning nutrient absorption
- Show the functions of the large intestine and the rectum
- Determine how water absorption occurs within the large intestine
Our instructors design all of our chapters to meet the needs of our different users. For instance, some of our users have never seen this information before, so each of the lessons provide extensive information to teach people all the necessary facts from the ground up. We also know that many of our users go to our site to review information they may have already learned. For those users, our easy-to-navigate site lets you pick exactly what you need to review. Plus, our assessment tools help you gauge how much information you remember.
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. Movement Through the Small Intestine: Peristalsis, Segmentation & Pendular Movement
The small intestine is an important organ for digestion and absorption of nutrients. In this lesson, you will learn about the enterogastric reflex. You will also learn how intestinal movements, such as peristalsis, segmentation, and pendular movement, improve digestion and absorption.
4. Small Intestine: Nutrient Absorption and Role In Digestion
The majority of digestion and absorption of nutrients takes place in the small intestine. In this lesson, you will learn about unique modifications within the walls of the small intestine, such as microvilli, villi, and circular folds. These structures increase absorption of nutrients.
5. Rectum, Functions of the Large Intestine & Water Absorption
The large intestine is the final processing area for digested food. In this lesson, you will learn how the large intestine removes water from undigested food and prepares for the elimination of feces through the anus.
Earning College Credit
Did you know… We have over 95 college courses that prepare you to earn credit by exam that is accepted by over 2,000 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the Nutrition 101: Science of Nutrition course
- Introduction to Nutrition
- Healthy Diet Planning
- Role of Carbohydrates in Nutrition
- Role of Lipids in Nutrition
- Protein's Role in Nutrition
- Role of Water in Nutrition
- Minerals in Nutrition
- Symptoms of Mineral Deficiency & Toxicity
- How Vitamins Support Nutrition
- Nutrient Digestion, Absorption & Transport
- Cell Anatomy & Metabolism
- Weight Management & Energy Needs
- Eating Disorders: Risk to Nutrition
- Physical Activity & Nutrition
- Studying for Nutrition 101