From the heart's blood-pumping ability to the liver's filtering power, each component of the human ... organ. In the upper right part of your abdomen, the liver is your body's filtration system.

Cells in multicellular plants and animals are arranged into tissues, organs and organ ... up the gas exchange system. Mr Shribman: Yeah, so one of the systems in the human body is the digestive ...

Doctors' union the British Medical Association (BMA) and politicians alike have called for an opt-out system to be adopted in England, where people's consent to donate their organs after their ...