Overview including all of the components of the system, operation, functioning, and disorders.

Thinkquest site provides detailed information with graphics and concise explanation about the workings of the human blood and the circulatory system. Includes safety tips to follow at home as well as interactive forums.

Multiple-choice quiz with crossword puzzle.

A multimedia site, showing animations of what different behaviors and lifestyles will do to one's circulatory system. Offers health tips and food recommendations.

From the Children's Heart Institute, a diagram comparing a heart to a house.

This is the story of a handful of brilliant, obsessed surgeons and researchers who pursued the target of a practical artificial heart for decades. Includes heart facts, an overview of a heart transplant, and artificial heart technology.

View a diagram of the major arteries and veins in the human body.

A well illustrated interactive educational resource about the heart and heart disease. Includes a quiz.

From the Science Learning Network, visitors will learn about the heart, blood vessels, circulatory system development, cardiovascular health, and a history of heart medicine.

A PBS program about preventing heart disease. Includes frequently asked questions, an overview of heart disease, risk factors, pet scans, lesson plans, and a bibliography.