About This Chapter
The Human Body: Organ Systems - Chapter Summary
Our engaging chapter covers the organ systems of the human body, looking in-depth at their structure and function. These short, mobile-friendly lessons are accessible to you on any mobile device 24 hours a day for convenient studying. Feel free to watch an entire video lesson, or skip ahead using the video tabs feature to just the topic you'd like to review. This chapter is designed to help you:
- Describe the levels of structural organization in the body
- Understand the purpose of the integumentary system
- Outline the human skeleton and the function of its bones
- Explain how muscles work in groups
- Name the parts of the human circulatory system
- Describe the physiology of the respiratory system
- Detail the functions of the upper and lower gastrointestinal tract
- Outline how the excretory and endocrine systems work
- Identify the parts of the human nervous system
- Give and overview of the male and female reproductive systems
- Discuss how the immune system defends the body against pathogens
1. Levels of Structural Organization in the Human Body
Explore the structural organization of the human body, starting at the level of the organism and progressing down in complexity through the organ system, organ, tissue, and cellular levels. Major features of each level are discussed.
2. What is the Function of the Integumentary System?
In this lesson, we'll explore the function of the different parts of the integumentary system, which protects the body. We will look at how the skin and its accessory organs work together.
3. Overview of the Human Skeleton & the Functions of Bones
The human skeleton is the framework of the body. This frame is made up of 206 bones that do much more than let you stand up. Learn how your bones provide support, protection, movement and storage and one other function that is sure to surprise you!
4. What Is the Muscular System? - Function & How Muscles Work in Groups
Ever feel overwhelmed when you look at all those muscles in your textbooks? Well, if you do, then maybe learning a little about their anatomy and organization and how they work together will help you sort through it all. In this lesson, learn about the muscle itself and how it works with others to help the muscular system function.
5. The Human Circulatory System: Parts and Functions
In this lesson, you will take a ride on the transportation system of the body called the circulatory system and its two parts: the pulmonary circuit and the systemic circuit. Take a look inside and see how every inch of your body receives the oxygen and nutrients it needs.
6. Respiratory System: Function & Physiology
The human respiratory system is a crucial facet of a vital, healthy body. In this lesson, we will explore its function and physiology. At the end, you can test your knowledge with a brief quiz.
7. 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.
8. 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.
9. Excretory System
Each year in the U.S., close to 400,000 people with kidney failure undergo dialysis treatment in order to remove waste, remove excess fluid and restore electrolyte balance. Kidneys, the workhorses of the excretory system, perform these same functions more effectively than any machine. In this lesson, we'll talk about how the excretory system removes toxic substances from the body.
10. The Human Nervous System: Parts & Functions
Your nervous system allows you to experience the world around you and react to it. It's a complex system that's split into two main parts, the central nervous system and the peripheral nervous system. Read on to learn the parts and functions of the system.
11. Endocrine System Function & Hormone Regulation
Our hormones play a big part in how we feel and behave throughout the day. Hormones also affect important bodily functions. What other functions do our hormones regulate? Find out in this lesson on the endocrine system!
12. Female Reproductive System: Functions & Structures
The primary function of the female reproductive system is to produce offspring. In this lesson, you'll travel through the female reproductive system. Along the way, you'll learn about important structures and the roles they play in creating life.
13. Male Reproductive System: Functions, Organs & Anatomy
Ever wonder what the inside of a male looks like? Find out in this lesson that explores the inner workings of the male reproductive system and the pathway that sperm takes.
14. What Is the Immune System? - Our Body's Defense Against Pathogens
In this lesson, you will be introduced to the immune system. You'll learn about the innate and adaptive immune system, Edward Jenner, haptens and immune tolerance.
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