the best science on the web about
cardiovascular system

Heart and Circulatory System
Image: iStockphoto.com/Raycat

Heart and Circulatory System

The heart and circulatory system are the human body's "lifeline," carrying oxygen and nutrients to your organs and cells.

Examine this network of arteries, veins, and capillaries and the muscular pump at the center of it all. Then explore cardiovascular problems, from congenital heart defects and arrhythmias to hypertension and coronary artery disease.

TeensHealth
Loading...
Cardiovascular System

Cardiovascular System

No doubt about it, the cardiovascular system is highly complex. You can skip the details and look at its basic design with this interactive. More...

Interactive
BiologyInMotion.com
A Tall Order

A Tall Order

As we age, veins often have trouble keeping blood moving in the right direction, which can cause problems. A treatment came from studying giraffes, which have skin that functions like a compression bandage. More...

Article
3M
Circulatory System: Facts, Function, and Diseases

Circulatory System: Facts, Function, and Diseases

It's more than just "a highway for blood." Take a closer look at the three independent systems that work together, as well as milestones in its history and study. More...

Article
LiveScience
Hibernating Black Bear: Medical Marvel

Hibernating Black Bear: Medical Marvel

Dr. Paul Iaizzo does heart research. So why is he climbing into bear dens? Find out what hibernating bears have to do with human hearts and other muscles. More...

Profile
University of Minnesota
How Space Technology Improves Human Health

How Space Technology Improves Human Health

Technology that NASA originally developed for space exploration is now being used to improve our health. On this site, select the body system you're interested in to see a related video. More...

Video
NASA
If Blood Is Red, Why Are Veins Blue?

If Blood Is Red, Why Are Veins Blue?

Blood is always red — even when it's returning to the heart with not much oxygen. So why do your veins look blue? The answer can be found in the science of light. More...

Video
Wonderopolis
Kids with ‘Adult’ Problems

Kids with ‘Adult’ Problems

Many more teens are developing heart disease and high blood pressure than in the past. Find out what's causing these health issues. More...

Article
Science News for Students
Circulatory & Respiratory Systems

Circulatory & Respiratory Systems

You breathe in oxygen and exhale carbon dioxide, but your respiratory system doesn't work alone. See how it partners with your circulatory system to make your body function. More...

Video
CrashCourse
Map of the Human Heart

Map of the Human Heart

Meet your heart. Each day it beats about 100,000 times, helping blood travel thousands of miles through your body. See how it works. More...

Interactive
NOVA/PBS
Modeling the Human Cardiovascular System: The Factors that Affect Blood Flow Rate

Modeling the Human Cardiovascular System: The Factors that Affect Blood Flow Rate

Build a model of the cardiovascular system. Then experiment to see how the rate of blood flow changes between normal and narrow arteries. More...

Activity
Science Buddies
Researchers Aim to Restore Heart Muscle Using Stem Cells

Researchers Aim to Restore Heart Muscle Using Stem Cells

Researchers at the University of Minnesota are studying whether stem cells can help restore damaged heart muscle. More...

Video
KARE 11

Latest Comments

You Also Might Like

  1. taste

    taste

  2. extremophiles

    extremophiles

  3. fish

    fish

  4. cells

    cells

  5. guinea pigs

    guinea pigs