Embryonic Scans Show Human Face Forms Like a Puzzle

Have you ever wondered why humans have a groove above the upper lip that seems to have no purpose whatsoever? This groove, known as the philtrum, tends to go un-noticed unless it is not completely formed, resulting in a cleft palette. With the help of a CGI created from high quality human embryonic scans during the early stages of development, Dr. Michael Mosley shows that the forming of the philtrum is actually a clue to our evolutionary fish ancestry.


Watch below to see how the human face comes together like pieces of a puzzle in a time-lapse of the fourth through the tenth week of fetal development. Notice that the top lip and jaw start as gill like structures and the eyes are on the side of the head. Somehow everything rotates and fuses together seamlessly 99.9% of the time, with the philtrum as the only clue left behind. Find out more anatomical clues to our amphibian history from Dr. Mosley on BBC.

Source: BBC News

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