Ion Exchange and Organs

As well as the local problems of ion exchange, large-bodied organisms, such as human beings, must con trol ion levels throughout their whole body. They do this by managing uptake and rejection of ions selectively. Thus it is necessary to ingest sufficient but not too much of many ions such as Na + , K + , Cl~ and HPO4 . The monitoring and rejection organ is the kidney. The kidney membranes act as complicated ion exchange systems. However, the brain apparently requires special ionic conditions, since cer-ebrospinal fluids of quite different composition from blood.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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