The human body is truly incredible. Starting as a single cell, it develops into a complex system of organs, muscles, fluids, nerves, and a strong skeletal structure. It is safe to say that the human body will always amaze us. Here are some lesser-known and fascinating facts about it.
Adults Have Fewer Bones Than Babies
While adults have approximately 206 bones, babies have around 300. This is because some of the bones that fuse together as we grow are separate in babies. For example, the skull has a ‘soft spot’ which consists of cartilage between the unfused bones.
Goosebumps Actually Keep You Warm
Have you ever wondered why you get goosebumps? It turns out that they are actually your body’s way of keeping warm. When you have goosebumps, the hair on your body stands upright and traps air underneath, acting as insulation. This phenomenon is caused by a small muscle called the arrector pili, which raises the hair.
Stars And Stripes
Did you know that the human body also has stripes? These lines, known as Blaschko lines, appear when our cells divide and our body grows in the womb. Although these rows of cells are usually difficult to see, they may become visible under powerful UV light.
It’s in Your DNA
We often hear about DNA in crime shows, as it can help catch criminals. Surprisingly, 99.9% of all human DNA is the same. It is the remaining 0.1% that varies among individuals. This small difference can have a significant impact on our appearance and health.
The Truth Behind Your Teeth
Contrary to popular belief, teeth are not classified as bones. They are made up of an enamel coating, which is the hardest substance in the human body. Underneath the enamel is dentin, a substance that contains nerves and blood vessels. Unlike bones, teeth do not have fatty marrow or a collagen-packed structure.
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