By Richard Walker
Readers embark on a phenomenal voyage via human biology and detect the body’s fine details as they’ve by no means noticeable them ahead of. starting with the elemental development blocks, carrying on with to the physique in motion, and concluding with the body’s platforms, it is a compact and accomplished examine the beauty that's the human computer.
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If not released, sperm are broken down and recycled. ■ Only a few hundred sperm survive the journey to the fallopian tube. ■ The uterus normally resembles an upside-down pear. But during pregnancy, as a foetus grows, the uterus expands massively to the size of a basketball, bouncing back to its original size after birth. Inside a uterus 3-D ultrasound scan Q Can doctors “see” a growing baby? Vagina is the passage through which the baby is born A An ultrasound scan provides a safe way to “see” a foetus growing inside its mother’s uterus.
A Of the two senses, smell is Brain stem the dominant partner because you can distinguish many more odours than tastes. When you eat food, such as popcorn, the combination of smell and taste allows you to sense and appreciate its flavours. But if, for example, you have a bad cold and lose your sense of smell, food tastes very bland and, if you close your eyes, is difficult to identify. Fresh popcorn Smell and taste detection More Facts ■ People who work as perfumers have a “super sense” of smell that enable them to identify and distinguish between subtle fragrances.
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. This ruthless hunter tracks down invaders by following the chemical trails that they leave behind them. The macrophage then sends out projections that stick to and surround a bacterium, and pulls the germ inside it. Once inside the macrophage, the bacterium is doused in powerful enzymes that digest and kill it.