By: Tara Interrante&

Casley Bryers

• Protects the body from harmful environmental influences such as – mechanical damage, pathogenic organisms, etc.

• Sensation through:– Touch– Pressure– Pain & Temperature

• 2 layers– Dermis & Epidermis

• Dermis- sensitive connective tissue layer of skin below the epidermis, and contains nerve endings, sweat glands, sebaceous glands, blood vessels, and lymph vessels.

• Epidermis- the outer, protective, nonvascular layer of skin that vertebrates while covering the dermis.

• Sweat glands- tubular glands that are found everywhere in the skin of humans.

• Sebaceous glands- any various glands that are located in the dermis that open into a hair follicle.– Hair follicle- a tubular enfolding of the

epidermis containing the root of a hair.

• People are born with different types of skin colors.– Some people have the

ability to tan from sunlight– People with the albinism

disease (albinos) can’t get dark.

• Two irritations:– Acne & Warts

• Caused by a viral infection

• Can be removed by surgery, freezing, or application of caustics

• Can be prevented by washing skin while bathing

• Don’t touch someone else’s wart !!!

• Mostly found in the face, back, neck, and shoulders

• You can treat your acne with Acne wash from any local drug store

• Symptoms of acne are forming bumps or heat rashes

• You can prevent acne by removing your makeup before sleeping, and most likely washing yourself by showering.

• The cause of acne is unknown.• Occurs mainly between the ages of 14 –

20

• Example: Sunburn

• This affects the epidermis causing major pain, redness, and swelling.

• Affects both the dermis and epidermis causing redness, pain, swelling, and blisters.

• If this burn isn’t properly treated, it then gets worse, which becomes a third degree burn.

• Affects the dermis, epidermis, and hypodermis causing vessels to become visible, and charring of skin or a translucent white color.

• After healing this burn, they most likely turn into scars.

• Keratin- a tough protein substance that is a chief ingredient of hair, nails, horns, and hooves.

• Epithelial cells- closely packed cells forming the epithelium.

• Adipose tissue- a type of connective tissue that contains stored cellular fat.