North Central Regional Educational Laboratory
Kids learn.org: Circulatory System
What do you know about the circulatory system? This site features several links to help you increase your knowledge of this fascinating human body system.
ClassFlow
Class Flow: Human Body Systems
[Free Registration/Login Required] This flipchart introduces students to some of the major organs of the human body. Visual aids provide focused information on the heart and circulatory system as well as the brain and the eye.
University of Utah
University of Utah: Cardiovascular Pathology Index
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.
Texas Education Agency
Texas Gateway: Fluid Statics: Pressures in the Body
By the end of this section, you will be able to explain the concept of pressure in the human body; explain systolic and diastolic blood pressures; and describe pressures in the eye, lungs, spinal column, bladder, and skeletal system.
Curated OER
Kids Health: How the Body Works
A colorful, interactive site for kids and teens. A holistic approach to learning about your body, including topics such as feelings, drugs, injuries, and other health issues. Available in Spanish.
TeachEngineering
Teach Engineering: Body Circulation
Middle schoolers are introduced to the circulatory system, the heart, and blood flow in the human body. Through guided pre-reading, during-reading and post-reading activities, students learn about the circulatory system's parts,...
Other
Inside the Human Body: The Respiratory System (Grades 1 3)
Students in grades one through three will love learning about the body's respiratory system through a variety of fun and interactive activities. Particularly engaging is the online storybook that teaches children about the heart and...
National Institutes of Health
National Heart, Lung and Blood Institute: What Are the Lungs?
Find excellent information about the human lungs, and how they contribute to the gas exchange process for the body. Inside, find detailed illustrations and a short, narrated animation of the respiratory system at work.
Science Buddies
Science Buddies: Effects of Exercise: Changes in Carbon Dioxide Output
Everybody knows that your body needs oxygen to keep going, and that you breathe out carbon dioxide as waste. What happens when you exercise? You've probably noticed that you breathe faster, and your heart beats faster. What triggers your...
Other
World Invisible: The Human Circulatory System: Blood Circulation
A labeled diagram of the major veins and arteries in the human body.
University of Kansas Medical Center
University of Kansas Medical Center: Basic Histopathology
These microscopic images of different cells and tissues from the human organs gives an idea of some the pathological processes that occur and the importance of histology.
Ducksters
Ducksters: Science for Kids: Blood and the Heart
Kids learn about the science of Blood and the Heart. The Human bodies energy delivery system.
BioEd Online
Bio Ed Online: Microgravity
In this lesson middle schoolers will use water balloons to simulate the effects of gravity and microgravity on fluid distribution in the body.
Other
Dr. Saul: Biology in Motion
This interactive site provides animations and activities in several areas of physiology. The images are simple, but clear. The accompanying text provides a good description of the process being shown.
Curated OER
Heart of a 26 Year Old Man, Perforated by a Bullet, New York, 1937
Various pictures of parts of the human anatomy showing gun shot trauma are found on this interesting site. .
CK-12 Foundation
Ck 12: Life Science: Blood Vessels
[Free Registration/Login may be required to access all resource tools.] The blood vessels are an important part of the cardiovascular system. They connect the heart to every cell in the body. Arteries carry blood away from the heart,...
ClassFlow
Class Flow: People Grow and Change
[Free Registration/Login Required] This is a 2nd grade unit on how the human body changes, as well as lessons on the heart and lungs, bones and muscles, and the digestive system. This unit includes web links to some fun informational...