Are there any parts of the human body that get oxygen directly from the air and not from the blood?
Hello student ,
Yes , there is only one part in the whole human body that gets oxygen directly from the air and not from the blood . The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air. The cornea is the fastest healing tissue in the human body, thus, most corneal abrasions will heal within 24-36 hours