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Amazing Human Body (Dk) by Richard Walker

By Richard Walker

Readers embark on a beautiful voyage via human biology and become aware of the body’s fine details as they’ve by no means visible them sooner than. starting with the fundamental development blocks, carrying on with to the physique in motion, and concluding with the body’s platforms, this can be a compact and finished examine the beauty that's the human desktop.

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Strenuous exercise 3 The two ventricles contract together, pushing blood to the lungs and body. Valves between atria and ventricles close to prevent backflow. Blood pumped to the body Blood pumped to the lungs Valves guarding the exits from the ventricles open Valves between the atria and ventricles shut Ventricles contract together 45 What journey does my blood take? Circulatory system Pumped by the heart, blood circulates in one direction around the body to deliver supplies to all body cells.

How does my body protect itself? 42 44 46 48 Neutrophils hunt and eat invading germs Blood cells Red blood cells carry oxygen from the lungs to the tissues Platelets are cell fragments that play a key role in blood clotting Monocytes track down and destroy pathogens Why is blood red? Lymphocytes are white blood cells that release germ-killing chemicals Your body’s cells need a constant supply of food, oxygen, and other essentials, as well as a prompt removal of wastes, to stay alive. Blood provides this delivery and disposal service as it flows around the body.

Science Photo Library: Eye Of Science (tc); Roger Harris (c). 48 Science Photo Library: Pasieka (cra). 48-49 Science Photo Library: Eye Of Science (bc); NIBSC (tc). 49 Getty Images: Stockbyte (cb). Science Photo Library: David Goodsell (br); Steve Gschmeissner (cr); Dr Gopal Murti (tr). 50-51 Science Photo Library: Steve Gschmeissner. 52-59 Corbis: Visuals Unlimited (background). 53 Corbis: Visuals Unlimited (crb). Science Photo Library: GE Medical Systems (br). 54 Corbis: Tim Pannell (tl). Science Photo Library: CNRI (br/XY); Dept.

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