why do humans have skin? name at least 3...
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![Page 1: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/1.jpg)
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•Why do humans have skin?
Name AT LEAST 3 reasons.
![Page 2: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/2.jpg)
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![Page 3: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/3.jpg)
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•Name the parts of the Integumentary
system and discuss the function of each part.
![Page 4: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/4.jpg)
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Skin is the largest organ of the body, and
serves to:
•Protect other organs and
tissues
•Maintain body temperature
•Excrete waste materials
through perspiration (sweat)
•Function as a sense organ
•Produce Vitamin D
![Page 5: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/5.jpg)
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Three Main Layers of Skin
A. Epidermis – outer
most layer
B. Dermis – Nerves,
vessels, glands, hair
follicles
C. Hypodermis –
attaches skin to body,
composed of fat for
warmth
![Page 6: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/6.jpg)
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Hair - Epidermis
•Hair grows out of the epidermis to cover parts of
the body.
•The shaft is what we see and the root attaches
to the muscle in the dermis.
Hair color is determined by the presence
of melanin.
Baldness or alopecia may result from
heredity, disease, injury, or
chemotherapy.
![Page 7: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/7.jpg)
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Nails - Epidermis
•Nails are plates
made of hard keratin
that cover the dorsal
surface of the fingers
and toes.
•At the base of most nails a lunula or whitish
half-moon is an area where keratin and other
cells have mixed with air.
•The cuticle is a narrow band of epidermis that
surrounds the base or bottom of nails.
![Page 8: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/8.jpg)
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Glands - Dermis
•Sweat glands
release waste which
cools the skin.
•Oil Glands moisten the skin and make it flexible
![Page 9: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/9.jpg)
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The field dermatology is the study, diagnosis and
treatment of ailments to the skin
![Page 10: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/10.jpg)
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Did you know that the skin can be
tested for various diseases and
allergies?
Tests for Allergies
•Patch test
•Scratch test
•Intradermal tests
Tests for Diseases
•Mantoux test used to
detect tuberculosis.
•Schick test used to
detect diptheria.
![Page 11: Why do humans have skin? Name AT LEAST 3 reasons.hughesh.weebly.com/uploads/2/2/0/0/22004468/integumentary-system.pdf•Name the parts of the Integumentary system and discuss the function](https://reader033.vdocument.in/reader033/viewer/2022042210/5eaea7830a413010696e4462/html5/thumbnails/11.jpg)
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Fun Facts
Skin is the largest organ in your
body
Your skin contains millions of
sensory receptors
You lose 30,000-40,000 dead
skin cells every minute!