The nervous system is the body’s direct communication system. It’s made up of the body’s many nerve cells. These cells work together in a network that sends and receives signals from one ...

Find out how conformers and regulators maintain their body temperature in different ways. Find out how the circulatory system takes oxygen around the body. What is in your blood? Discover how ...

This clip could be used as part of body systems topic to illustrate the function of the biceps and triceps. Students could label a diagram of the biceps/triceps antagonistic pair of muscles.