Learn about the three types of muscle tissue, how a muscle contracts, and how muscles are adapted for exercise. [3:40]

In this activity, students participate in a series of timed relay races using their skeletal muscles. The compare the movement of skeletal muscle and relate how engineers help astronauts exercise skeletal muscles in space.

An impressive array of muscle tissue pictures for viewing within the classroom.

This instructional activity covers the topic of muscles. Students learn about the three different types of muscles in the human body and the effects of microgravity on muscles. Students also learn how astronauts need to exercise in order...

Self-guided learning activity where students learn about the structure and function of the human muscular system. There is a short quiz at the end of the lesson to check for understanding.

Study several microscopic specimens taken from the three different types of muscle tissues: skeletal, smooth, and cardiac.

This introduction to the muscular system of the body describes the three different types of muscles: smooth, skeletal, and cardiac.

The Engineering and the Human Body unit covers the broad spectrum of topics that make up our very amazing human body. Students are introduced to the space environment and learn the major differences between the environment on Earth and...

In this lesson the students will learn how the heart functions. Students will be introduced to the concept of action potential generation. The lesson will explain how action potential generation causes the electrical current that causes...

What is the muscular system? Learn how muscles work, the different types of muscles, and how exercising effects muscles.

Check Steve's cardiovascular health before he starts filming his dangerous wildlife special. Following the activity, read more about the heart, and then take a quick quiz to check for understanding.

This lesson provides an overview that explains the muscular system in humans. It is 2 of 4 in the series titled "Animals: Human Muscular System."

This lesson provides an overview that explains the muscular system in humans. It is 4 of 4 in the series titled "Animals: Human Muscular System."

This lesson provides an overview that explains the muscular system in humans. It is 1 of 4 in the series titled "Animals: Human Muscular System."

In this activity, students squeeze a tennis ball to demonstrate the strength of the human heart. Working in teams, they think of ways to keep the heart beating if the natural mechanism were to fail. The goal of this activity is to get...

How exactly does the muscular system function? Find out!

This site features a detailed index of photographs for cardiovascular pathology. You can see what a normal human heart looks like and what a sick one looks like too. Come and check it out.

Read this passage and study the graphic to complete a five-question quiz concerning the heart attack.