© iStockphoto, Jani Bryson The hair on your head keeps your head warm.. Nail cells under the skin make nails grow.. The old cells are hard and dead.. Living hair cells under the skin mak
Trang 1© iStockphoto, Jani Bryson The hair on your head
keeps your head warm.
Nail cells under the skin
make nails grow The
new cells push up the
old cells The old cells
are hard and dead
Living hair cells under
the skin make hair grow
New hair cells push dead
You are alive But parts
of your nails, hair, and
skin are dead!
o Where does hair begin
to grow?
o Why do you think it doesn’t hurt to cut your hair or nails?
Living/non-Living
Hair, Skin, and Nails
Each day, about 50
to 100 hairs fall out.
hair cells through the skin The cells in the hair that
we see are dead
The outer layer of skin
is dead, too That’s why it flakes off!
Your nails help protect the tips
of your fingers and toes.
Skin protects our insides and gives us the sense of touch.