It’s far from clear how natural selection could select for this as an “adaptation” when its most obvious effect is to contribute to carpal tunnel syndrome.
Researchers say a growing number of adults have a persistent, prominent median artery in their arms, an artery that’s important in the embryonic stage.
Physician Howard Glicksman explains the hugely complex blood flow systems required to keep us clear-headed and alive.
Biologist Ray Bohlin and physician Howard Glicksman discuss the body’s wondrous control systems for using water.
Finely tuned and exquisitely engineered, this system gave our ancestors enough oxygen not only to stay alive but to thrive in the face of grave challenges.