Download Amazing Human Body (Dk) by Richard Walker PDF

By Richard Walker

Readers embark on a good looking voyage via human biology and become aware of the body’s fine details as they’ve by no means noticeable them earlier than. starting with the elemental 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 laptop.

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A Also called pathogens, germs are micro-organisms – living things that can only be seen using a microscope – that cause disease. That is, they stop your body from working normally. Germs include the viruses that give you the flu or a cold, and the bacteria that cause stomach upsets. Left to their own devices they would multiply inside your body and cause great harm. coli bacteria Q How do white blood cells kill bacteria? A Macrophages like this one are white blood cells that specialize in destroying bacteria by eating them.

On entering your ear they make the eardrum vibrate. This, in turn, sets up pressure waves in the fluid-filled cochlea of the inner ear. These bend tiny “hairs” on the cochlea’s hair cells causing them to send signals to the hearing part of your brain. Q Are there any bones in my ear? A Linking the eardrum to the inner ear are three small bones, or ossicles, individually named the hammer, anvil, and stirrup after their shapes. The smallest, the stirrup is even tinier than the anvil shown here. The ossicles form a bony chain that transmits sound vibrations from the eardrum to the oval window – the entrance to the inner ear.

Drugs extracted from the rosy periwinkle, a rainforest plant, have been used to successfully treat leukaemia. ■ Red blood cells contain haemoglobin, a red-coloured protein that carries oxygen. A single cell contains 250 million haemoglobin molecules. 43 How fast does my heart beat? Superior vena cava brings oxygen-poor blood from the upper body At the core of your body’s blood transport system is a muscular pump – the heart. The heart has two sides – left and right – each guards with an upper and lower chamber – the atrium and ventricle.

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