Anaya got a small paper cut while organizing files. It didn’…
Anaya got a small paper cut while organizing files. It didn’t bleed, so she figured it wasn’t serious. Her friend mentioned that the outer layer of the skin—the epidermis—has no blood vessels. Curious, Anaya wondered: If the epidermis is avascular, how do those skin cells get the nutrients and oxygen they need to stay alive and heal? How would you help her answer the question?