An artery meant to disappear before birth is now being found in numerous adults.
, a lifeline for blood supply to the human forearm and hand during early human development. Traditionally, the artery has been considered an embryonic structure that forms in the mother's womb and disappears around the eight-week mark. Under these circumstances, two arteries known as thethen replace the median artery and take on the task of supplying blood to the forearm, hands and fingers.
However, recent discoveries have shown that some of us retain all three arteries well into our adult lives. What does the sudden presence of this additional artery mean for human development and the future of human evolution? Here's what we know!For centuries, human anatomy has evolved at an increasingly fast rate.
"The study demonstrates that humans are evolving at a faster rate than at any point in the past 250 years," said Teghan Lucas, lead author of the study and an archaeologist at Flinders University,
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