Whether you use this to lecture on the circulatory system, or assign it for individuals to view, you will be pleased with this PowerPoint. The author invested a lot of time to make it educational, but also entertaining with humorous sound effects and choice graphics. It even includes links to Internet resources. There is a glitch in the ninth slide where another, incomplete version of it appears on the next click. It is easily skipped, or if you are adept with PowerPoint, removable.