About This Chapter
Core Concepts in Anatomy - Chapter Summary
This chapter offers a simple and high-level overview of fundamental concepts in anatomy. These simple lessons help you learn or review the basics of biological organization, cells, organ systems, multicellular organisms and more. Studying this chapter can help you:
- Assess the pros and cons of function and structure in biological organization
- Describe a cell's structure and function
- Define concepts related to tissues, epithelium and multicellular organisms
- Recognize the components of an organ system
- Identify human body organ systems
Following each lesson is a short quiz to help you check your understanding of important anatomy terms. If you have any questions, simply submit them to our expert science instructors. The chapter is available whenever you need it, and you can access these resources on any device that has an Internet connection.
1. Structure & Function in Biological Organization: Benefits & Disadvantages
This lesson will discuss biological organization in terms of cells, tissues, organs, and organ systems. It will also discuss the benefits and disadvantages of multicellular versus single-celled organisms.
2. What Are the Organ Systems of the Human Body?
In this lesson, you'll learn about the 11 organ systems, which are made of multiple organs that work together to keep the human body functioning. Using easy-to-understand descriptions and illustrations, we'll explore the circulatory, respiratory and digestive, systems, among other types, after which you'll have the chance to take a brief quiz and see how well you understood the material.
3. 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.
4. What is the Cardiovascular System? - Function & Organs
Your cardiovascular system never stops! Your heart beats many times each minute to circulate blood throughout your body. In this lesson, learn about your heart and the rest of your cardiovascular system.
5. 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.
6. 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.
7. 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.
8. Gas Exchange in the Human Respiratory System
Did you know that the average human lung has a respiratory surface area that is roughly the same size as half of a tennis court? Believe it or not, that's how much surface area an active, healthy human needs to ensure that the body gets plenty of oxygen.
9. 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.
10. Skeletal System and Muscular System
Do you know how many bones are in the human body? Check out this video lesson to uncover the answer, as well as understand the role and importance of the skeletal and muscular systems.
11. 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.
12. Female Reproductive System: Internal Anatomy
Ever wonder where a female produces her eggs or how they get from the ovary to the uterus? Find out in this lesson about the internal reproductive anatomy of females.
13. 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.
14. What is the Lymphatic System? - Structures, Function & Vocabulary
Your lymphatic system is an important part of your body's defense team. Learn about structures of the lymphatic system, such as the lymphatic vessels, spleen, thymus gland, tonsils and Peyer's patches, and the roles they play in keeping you healthy.
15. Homeostasis in the Human Body
Homeostasis is the term we use to describe the reasonably stable internal environment of your body. Learn how parts of your body communicate with each other to maintain this state of homeostasis, and how negative feedback loops work.
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