Beauty is Skin Deep
◐ What is the largest organ in your body? Not your brain, heart or ..would you have guessed skin? Weighing in at ~3.5 kg, with an area of 2 square meters, your skin accounts for 16% of body weight. About 11 miles of blood vessels and 45 miles of nerves travel through the dermis!
◐ Love the Skin You’re In: Of your 300 million skin cells, roughly 40,000 are shed every minute. This adds up to ~4 kg/year. The good news is that if you don’t like the skin you’re in, you’ll have a new one in 4 weeks.
◐ Don’t be Squamish: Skin is layered on as polygonal cells tightly connected into a sheet, known as squamous epithelium. The left image shows the typical cobblestone pattern, with nuclei in blue.
◐ Hair Today, Gone Tomorrow: Mammals have a lot of hair, up to 100,000 follicles on our head. The right image is a section through skin showing hair emerging from follicles in the dermis. The dark blue bulge at the base of the follicle is filled with stem cells.