Everything from ankle sprains to zits is listed, with clear, concise, and funny explanations for how these systems really work. The Teacher Center section contains a list of grade-specific classroom activities as well as links to other websites, books, videos, and software that can serve as enrichment. This section also includes a link that describes how the web site correlates to the McREL National Standards. When you do not breath, you expire. Three kinds of blood vessels are arteries, vanes and caterpillers.
Blood flows down one leg and up the other.
Respiration is composed of 2 acts, first inspiration, and then expectoration. The body consists of three parts- the brainium, the borax and the abominable cavity. The alimentary canal is located in the northern part of Indiana. The skeleton is what is left after the insides have been taken out and the outsides have been taken off. The purpose of the skeleton is something to hitch meat to.