Where Is the Aorta?
Where Is the Aorta? The aorta is the great artery rising from the left side of the heart, through which the blood passes on its way to all parts of the body except the...
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What Medical Instruments Did the Romans Use?
What Medical Instruments Did the Romans Use? Some 200 surgical instruments of various kinds have been discovered in the ruins of Pompeii but, in general, the...
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What Is Osteogenesis Imperfecta?
What Is Osteogenesis Imperfecta? Osteogenesis imperfecta (OI) is a disease that causes weak bones that break easily. It is known as brittle bone disease. Sometimes the...
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What Is Pus?
What Is Pus? The pus, typically white-yellow, yellow, or yellow-brown, we see oozing out from a septic cut is made up of the dead bodies of white blood cells which have...
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Why Do Vinegar and Baking Soda React the Way They Do?
Why Do Vinegar and Baking Soda React the Way They Do? Baking soda and vinegar react chemically because one is a base and the other is an acid. Baking soda is a basic...
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Why Did Romans Built Flats and Villas in the First Century A.D?
Why Did Romans Built Flats and Villas in the First Century A.D? Today, you see builders advertising flats and villas for sale almost every day. But did you know that...
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How Many English Words Have Silent Letters?
How Many English Words Have Silent Letters? In an alphabetic writing system, a silent letter is a letter that, in a particular word, does not correspond to any sound in...
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Why Was Today’s ‘living Room’ Called a ‘parlour’ in Early British Homes?
Why Was Today’s ‘living Room’ Called a ‘parlour’ in Early British Homes? The word ‘parlour’ comes from the French word ‘Parler’ which means ‘to speak’. In the Middle...
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Why Were There Windows of Different Sizes in Ancient Homes?
Why Were There Windows of Different Sizes in Ancient Homes? The earliest windows were just holes in a wall. Later, windows were covered with animal hide, cloth, or...
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When Was the Iron Lung Invented?
When Was the Iron Lung Invented? In 1670, English scientist John Mayow came up with the idea of external negative pressure ventilation. Mayow built a model consisting...
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