Serendip
Homeostasis, Negative Feedback, and Positive Feedback
So many bodily activities depend on homeostasis! Give learners a solid background to understand the basic process of the human body. Scholars first examine negative feedback loops contributing to body temperature regulation and then a...
Other
Fun Science Gallery: Let's Observe the Red Blood Cells
A brief overview of red blood cells accompanies a blood smear observation experiment. Includes drawings and photographs to aid in understanding.
Treehut
Suzy's World: Blood
Use this site to find out why your body needs blood with this quick fact sheet. You can also try an experiment with your pulse.
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