Humans have important body systems that help us stay alive and healthy. Each system plays an important role, and is made up of several key organs and components. The unit The Human Body helps students explore the structures that make up their body, and how the various parts of their body work together. This unit focuses on the following body systems: skeletal, muscular, nervous, respiratory, circulatory, digestive, and excretory.
Your body is a complex machine. From your brain to your heart to your stomach to your bones and muscles, all of your body systems are constantly doing very important jobs. Below you will learn about five of your body systems.
The muscles of your body make up your muscular system. All muscles create movement, but you have three different types. Learn about your skeletal, smooth and cardiac muscles.
Your skeletal system is all about your bones. Bones give your body its basic shape, help you move and protect delicate organs. Bones also do weird things, like make blood cells and allow us to hear! Learn fun facts about your skeletal system.
Your skeletal system is made up of bones, joints, ligaments and cartilage. Learn about these parts of your skeletal system, and discover why babies have more bones than adults!
In this lesson, we'll discuss the nervous system and its function. You'll learn about the main parts of the nervous system - the central and peripheral nervous systems - and how they function in the body.
Your brain is a bumpy, gray blob. It might not look like much, but it does almost everything for you! In this lesson, we'll learn about the three main parts of your brain and what they do.
The human eye is composed of many different tissues. In this lesson, we'll discuss the tissues that play a significant role in focusing light on the retina. We'll follow the light from outside the eye to the retina, through the optic nerve and to the brain.
Your ears are made up of three main parts, the external ear, middle ear, and internal ear. Sound waves move into your external ear causing the eardrum to vibrate, which moves the tiny bones of your middle ear, and then it's on to the internal ear.