About The Book
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.Each step in a human’s development – from the creation of the brain and heart to the formation of the fingers and toes – is carefully regulated. This title discusses how the study of model organisms has aided our understanding of a human’s creation and what happens when something is altered during the normal course of events.
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