GCSE AQA Cardiovascular system - AQA Functions of the cardiovascular system The cardiovascular system is made up of three main parts - the heart, the blood vessels and the blood that flows through ...

A fish built from human heart cells that swims like a zebrafish could teach us how the human heart functions. The human heart can pump without signals from the brain, a feature known as ...

GCSE AQA Animal organisation - transport systems - AQA Circulation Multicellular organisms require transport systems to supply their cells and remove waste products.