| What is our skin made out of?|
|Question Date: 2018-10-26|
Our skin is made of skin cells that are called
fibroblasts. They're sort of flat, and
they lie in layers. The top layer of skin cells
dies and new layers grow at the bottom of our
skin, inside our bodies.
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Skin is made of a protein called keratin.
It's the same stuff that hair, fingernails,
reptile scales, and bird feathers are made of.
Our skin is made up of tiny units of life
called cells! Cells make up everything in
our bodies from our bones to our blood to our
skin. There are different kinds of
cells for different parts of the body. Our
skin is actually made up of many layers
of different kinds of cells! The top layer is
called the epidermis. The epidermis
protects our organs and muscles and skeleton from
the outside world and
infections. There are many different sublayers of
the epidermis, but I won’t get
into that here. The next layer down is called the
dermis. The dermis contains
what is called “connective tissue” -
basically groups of cells that connects
things. It contains nerve endings, hair
follicles, sweat glands, blood vessels, among
other things (and all of these things are also
made up of
different types of cells). Beneath the dermis is
subcutaneous tissue, which
connects skin to the muscle and bone underneath
it. The human body is an
amazingly complex system! Something as simple as
skin has many parts that
make it up which allow us to live our every day
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