1.
A disease in which some cells in the body divide uncontrollably.: Cancer
2.
A pigment that gives skin its color and protects it from burning in sunlight.: Melanin
3.
As perspiration evaporates from your skin, your skin is ________.: Cooled
4.
Every time you rub your hands together, you lose: Thousands of dead skin cells and any bacteria on them.
5.
Hair that you see above the skins surface is made up of d: Dead cells
6.
How does your skin gather info about the environment?: The nerves in skin provide information about such things as pressure, pain, and temperature.
7.
How much time of sunlight does your skin cells need to produce all the vitamin D you need all day?: Only a few minutes of sunlight
8.
If an adult's skin was stretched out flat , it would cover an area larger than 1.5 square meters----- about the size of....: A mattress on a twin size bed
9.
Important functions of the skin: 1. Protects the body from injury, infection, and water loss
2. helps regulate body temperature
3. Eliminates wastes,
4. Gather information about the environment
5. Produce vitamin D
10.
In most places , the epidermis is: Thinner than the dermis
11.
New cells that form deep in the epidermis gradually move upward to the surface of the skin, where after about________, the cells die.: Two weeks
12.
Outer layer of the skin: Epidermis
13.
Perspiration contains.....: Dissolved waste materials that come from the breakdown of chemicals during cellular processes.
14.
Perspiration reaches the skin through openings called....: Pores
15.
Skin cells produce______in the presence of sunlight.: Vitamin D
16.
Skin helps the body maintain a steady ____.: Temperature.
17.
Skin keeps important substances, like water/fluids ....: Inside the body.
18.
So perspirations does two things...: Cools the skin and eliminates wastes
19.
So when your skin perspires...: It is helping to eliminate wastes.
20.
Strands of hair that grow within the dermis: Follicles
21.
Structures contained in the dermis layer of the skin: Hairs, sweat glands, oil glands, blood vessels, and nerves
22.
The dermis is located below....and above....."..: Below the epidermis and above a layer of fat
23.
The inner layer of skin: Dermis
24.
The layer of dead skin cells on the surface of the skin protects ...: The body
25.
The shedding of dead cells carries away: Bacteria and other substances that settle in the skin
26.
The skin is organized into two main layers ...: The epidermis and the dermis
27.
The skin protects the body by forming ...: A barrier that keeps disease-causing microorganisms and harmful substances outside the body.
28.
Three simple habits to keep your skin healthy...: 1) eat a healthful diet
2) keep your skin clean and dry
3) limit your exposure to the sun
29.
True or false ... In some ways , the cells of the epidermis are more valuable dead than alive.tu: True
30.
True or false...The dermis contains nerves and blood vessels: True
31.
Under the microscope, The epidermal surface layer of dead cells resembles...: Flat bags laid on top of one another.
32.
Vitamin D is important for healthy bones because ....: It helps the cells in your digestive system to absorb the calcium in your food.
33.
What helps to waterproof the hair and keep skin moist?: Oil produced in glands around the hair follicles
34.
What in the skin responds to excess heat by producing perspiration.: Sweat glands
35.
What's the largest organ in the human body?: Skin
36.
When you become too warm, blood vessels in the skin....: Enlarge and the amount of blood that flows through them increases. This allows heat to move from your body to outside environment.
37.
Why are pain messages important to the body?: They warn you that something in your surroundings may have injured you
38.
Why don't you feel pain from shallow scratches and why don't they bleed?: Because the epidermis doesn't have nerves or blood vessels
