Lesson: Human Body Systems

Introduction

The human body is an amazing system of organs, tissues, and cells working together to keep us alive and functioning. There are several major systems in the human body, including the circulatory system, respiratory system, digestive system, and nervous system.

Key Human Body Systems

Interactive Tutorial: Human Body Diagram

Click on the human body diagram below to learn more about the systems.

Quiz: Test Your Knowledge

1. Which system is responsible for breathing?




2. Which system pumps blood throughout the body?




3. Which system is responsible for breaking down food?




4. Which system controls and coordinates body functions?




5. Which system provides structure to the body?