An Inch of Skin In each square inch
- Slides: 4
An Inch of Skin!
In each square inch of human skin: (These are out of order. Try to guess at some of them!) l l l How many hairs? How many cells? How many sweat glands? How many oil glands? How many blood vessels? How many nerve endings? How many heat sensors? How many cold sensors? How many pain sensors How many touch sensors? How many bacteria? l l l 78 yards (70 meters) 650 9, 500, 000 160 -165 19, 500 13 19 yards (17 meters) 32, 000 78 1, 300 65 95 -100
The correct order! l l l How many hairs? How many cells? How many sweat glands? How many oil glands? How many blood vessels? How many nerve endings? How many heat sensors? How many cold sensors? How many pain sensors How many touch sensors? How many bacteria? l l l 65 hairs 9, 500, 000 cells 650 sweat glands 95 -100 oil glands 19 yards of blood vessels 78 yards of nerves 19, 500 nerve endings 78 heat sensors 13 cold sensors 1, 300 pain sensors 160 -165 touch sensors 32, 000 bacteria
The correct order! l l l How many hairs? How many cells? How many sweat glands? How many oil glands? How many blood vessels? How many nerve endings? How many heat sensors? How many cold sensors? How many pain sensors How many touch sensors? How many bacteria? l l l 65 hairs 9, 500, 000 cells 650 sweat glands 95 -100 oil glands 19 yards of blood vessels 78 yards of nerves 19, 500 nerve endings 78 heat sensors 13 cold sensors 1, 300 pain sensors 160 -165 touch sensors 32, 000 bacteria
