If you think that every organ in the human body has its own meaning and life is difficult without it, you are wrong. Some growths are just the result of evolution and we don't even need them.
Dorsa Amir, who attends Boston College, is currently in phase of postdoctoral education. During his studies he focuses on human evolution, which, in her opinion, can be called the right one natural history museum.
Recently, he is with his followers on the social network Twitter shared the results of her work, which was based on studying evolutionary remains, visible on humans.
Evolution stopped the growth of some parts of the human body before they were fully developed. This category includes the tail, as well as some other growths. Are you wondering which one?
Long palmar muscle
If you place your hand on a flat surface and touch your little finger to your thumb, you will notice a long palmar muscle below the wrist that once helped people climb trees. 14 % of the world population does not have this muscle.
Darwin's nodule
The ear bulge, called Darwin's nodule, is most often turned inwards in humans, and outwards in animals. She has participated in moving ears in the past. To date, we have developed an extremely flexible neck, so we no longer need it.
Rep
The tail helped man balance and move between trees. The human embryo still develops it in the early stages of development, but destroys it before birth.
Wrinkle of the conjunctiva
Have you ever wondered what the role of the pink formation at the edge of your eye is? The fold of the conjunctiva once functioned as a third eyelid, which can still be seen in some animals today.
Goosebumps
The well-known 'goosebumps' are caused by cold or fear. An organism with erect hairs creates an additional layer to warm the body.
Grasping reflex
If you put your finger in the baby's palm, the baby will try to grasp it. We inherited the reflex from our ancestors. Primate cubs cling to their parents while moving in this way.
More information:
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