Science Studies

Download PDF by Richard Walker: Amazing Human Body (Dk)

By Richard Walker

ISBN-10: 0753413701

ISBN-13: 9780753413708

ISBN-10: 0753462923

ISBN-13: 9780753462928

ISBN-10: 1405336684

ISBN-13: 9781405336680

Readers embark on a beautiful voyage via human biology and detect the body’s fine details as they’ve by no means visible them earlier 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 sweetness that's the human computing device.

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Extra resources for Amazing Human Body (Dk)

Sample text

Retina contains light receptors Optic nerve carries nerve signals to the brain Vision is our most important sense. It allows us to see our surroundings. The sense organs responsible for vision are the eyes. Moving constantly, the eyes collect light and focus it onto receptor cells. These send signals to the brain, which creates images that Structure of the eye we can see. In the dark there is little or no light so we are unable to see. Fovea is the most sensitive part of the retina Radial muscle fibres relax muscle Q Why do my pupils Circular fibres contract change size?

Animals such as cats and bats can hear very high-pitched sounds that we cannot. Planes taking off 37 Why do sweets taste sweet? Being able to smell and taste allows us to enjoy food and drink and many other aspects of life. The senses of smell and taste are closely linked; both are located in the head – one in the nose and the other in the mouth. Both detect chemicals that are carried in the air (smell) or food (taste). And they help us to distinguish between the sweetness of sweets, and the bitterness of foods that might be poisonous.

Younger people can hear a much wider range of sounds than older people. ■ Animals such as cats and bats can hear very high-pitched sounds that we cannot. Planes taking off 37 Why do sweets taste sweet? Being able to smell and taste allows us to enjoy food and drink and many other aspects of life. The senses of smell and taste are closely linked; both are located in the head – one in the nose and the other in the mouth. Both detect chemicals that are carried in the air (smell) or food (taste).

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Amazing Human Body (Dk) by Richard Walker


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