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Skin
Facts about human skin
28
Science
7th Grade
12/15/2009

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Term
skin
Definition
This is the body's largest organ.
Term
epidermis, dermis, fatty layer
Definition
These are the names of the three layers of skin.
Term
epidermis
Definition
The outer, thinnest layer of skin.
Term
dermis
Definition
The middle layer of skin, between the epidermis and the fatty layer.
Term
rub off
Definition
When you touch things, the outermost cells of your skin do this.
Term
bottom of the epidermis
Definition
This is where new skin cells are constantly being produced.
Term
melanin
Definition
This is a pigment produced by cells that protect the skin and give it color.
Term
The dermis
Definition
Which is thicker? The dermis or the epidermis?
Term
dermis
Definition
This layer of skin contains blood vessels, nerves, muscles, oil, sweat glands, and other structures.
Term
insulates the body
Definition
This is the primary job of the fatty layer of skin below the dermis.
Term
nerve cells
Definition
These cells in the skin detect and relay information to the brain.
Term
protect against infections, diseases, and help prevent excess water loss
Definition
What are the three key ways the skin provides the body with protection?
Term
bruises
Definition
These happen when tiny blood vessels beneath the skin burst and leak into surrounding tissues.
Term
scab
Definition
This is the term for what forms on the skin when it is cut, in order to prevent bacteria from entering the body.
Term
grafts
Definition
Pieces of skin that a surgeon takes from one area of a person's own body to repair skin in another area are called these.
Term
Up to 4 liters a day
Definition
Professional athletes have been known to sweat this much.
Term
skin weighs twice as much as the brain
Definition
Which weighs more, your skin or your brain?
Term
eyelids
Definition
This is where the thinnest skin on your body is found.
Term
soles of the feet
Definition
This is where the thickest skin on the body is found.
Term
goosebump
Definition
This is what is commonly called when your skin gets harder and tries to prevent the sudden loss of heat.
Term
melanin
Definition
This the term for the pigment in skin that makes it different shades of brown.
Term
An itch gets us remove dead skin cells
Definition
Why do we get an itch?
Term
earwax
Definition
What special product does the skin in your ears produce?
Term
fingers and mouth
Definition
What are the most sensitive parts of the body?
Term
fingeprints
Definition
This part of the skin is unique and never changes.
Term
if they descend from people who lived near the equator, they have darker skin, and if they descend from people who lived far from the equator they tend to have lighter skin
Definition
What determines whether people are born with lighter or darker skin?
Term
for grasping things
Definition
What is the function of the ridges on our fingers?
Term
epithelial
Definition
The epidermis is made up of this type of tissue and contains two kinds of cells.
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