Biology Pages
Kimball's Biology Pages: Animal Circulatory Systems
This page has information on different types of animal circulatory systems. Scroll to the bottom of the page to find out about mammals.
Biology Pages
Kimball's Biology Pages: Anatomy of the Human Circulatory System
This site is produced by John W. Kimball, a retired biology teacher who wrote the textbook that these pages came from. The excerpt explains the different parts of the circulation system and how they function. Includes great pictures!
Earth Life
Earth Life: Blood
A very good description of the blood and circulatory systems of mammals and the important role that blood plays in the physiology of animals.
Other
Cartage.org: Types of Circulatory Systems
This thorough resource examinces the several types of circulatory systems and provides drawings of these systems in molluscs, arthropods, and the earthworms.
Annenberg Foundation
Annenberg Learner: Journey North: Facts About Earthworms
A comprehensive resource on earthworms, offering the following sections: "Facts about Earthworms," "Migration and Annual Cycle," and "Lessons Activities and Information."
Middle School Science
Lesson Plan: Earthworm Dissection
In this lesson plan site, you will "Learn the external and internal anatomy of the earthworm, understand the structure and function of external and internal organs, know the digestive, circulatory, reproductive, and nervous system, and...