![Page 1: Integumentary System Kristen Cianci. What is it? Includes skin, hair, and nails Body’s largest organ 15% of total body weight](https://reader036.vdocuments.net/reader036/viewer/2022082710/56649e2f5503460f94b1ffb6/html5/thumbnails/1.jpg)
Integumentary SystemKristen Cianci
![Page 2: Integumentary System Kristen Cianci. What is it? Includes skin, hair, and nails Body’s largest organ 15% of total body weight](https://reader036.vdocuments.net/reader036/viewer/2022082710/56649e2f5503460f94b1ffb6/html5/thumbnails/2.jpg)
What is it? Includes skin, hair, and nails Body’s largest organ 15% of total body weight
![Page 3: Integumentary System Kristen Cianci. What is it? Includes skin, hair, and nails Body’s largest organ 15% of total body weight](https://reader036.vdocuments.net/reader036/viewer/2022082710/56649e2f5503460f94b1ffb6/html5/thumbnails/3.jpg)
Functions First defense against bacteria, viruses,
and other pathogens Eliminates waste through perspiration Protects us from harmful ultraviolet
radiation Guards against sunburn
![Page 4: Integumentary System Kristen Cianci. What is it? Includes skin, hair, and nails Body’s largest organ 15% of total body weight](https://reader036.vdocuments.net/reader036/viewer/2022082710/56649e2f5503460f94b1ffb6/html5/thumbnails/4.jpg)
The 3 Layers Epidermis
-has no blood vessels-consists of keratinocytes
![Page 5: Integumentary System Kristen Cianci. What is it? Includes skin, hair, and nails Body’s largest organ 15% of total body weight](https://reader036.vdocuments.net/reader036/viewer/2022082710/56649e2f5503460f94b1ffb6/html5/thumbnails/5.jpg)
The 3 Layers
Dermis-contains two layer = provides elasticity-ending sight for blood vessels and nerves-contains sweat glands, lymph vessels, and oil glands
![Page 6: Integumentary System Kristen Cianci. What is it? Includes skin, hair, and nails Body’s largest organ 15% of total body weight](https://reader036.vdocuments.net/reader036/viewer/2022082710/56649e2f5503460f94b1ffb6/html5/thumbnails/6.jpg)
The 3 Layers Hypodermis
-insulate and cushion organs-stores fat-blood vessels, lymph vessels, nerves, and hair follicles run through here
![Page 7: Integumentary System Kristen Cianci. What is it? Includes skin, hair, and nails Body’s largest organ 15% of total body weight](https://reader036.vdocuments.net/reader036/viewer/2022082710/56649e2f5503460f94b1ffb6/html5/thumbnails/7.jpg)
Diseases
Acne- caused by increased levels of androgens
Alopecia Areata- attacks hair follicles Athlete’s Foot- common fungus infection
between the toes Dermatitis- inflammation, such as poison
ivy Psoriasis- causes skin cells to mature
quickly, backup of cells on surface Skin cancer- epidermis stops producing
keratin