Integumentary system Dr. Peterson. Skin Anatomy and Function Skin Anatomy and Function Nails Nails Hair Hair Color-related Integumentary Terms.

Integumentary system

Dr. Peterson

Skin Anatomy and FunctionNailsHairColor-related Integumentary Te

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General

The integumentary system is composed of the skin and its accessory structures: hair, nails, sebaceous glands, and sweat glands.

The skin is the:

External covering of the body.

Largest organ in the body.

Supplied with blood vessels and nerves.

integument coveringderm skinderma skindermat/o skincutane skinkerat/o cornea (eye or skin)

4 Main Functions of the skin

Protection (against invasion by bacteria and other potentially harmful agents and mechanical injury of delicate cells located beneath outer covering)

Regulation (inhibits excessive loss of water and electrolytes; provides a reservoir for storing food and water; guards against excessive exposure to sun’s ultraviolet rays; and helps to produce the body’s supply of vitamin D)

Sensation (to lower body temperature by blood vessels in the skin dilate, bringing more blood to the surface for cooling by radiation and sweat glands secrete more sweat for cooling by means of evaporation; and to raise body temperature by skin’s blood vessels constrict, allowing more heat-carrying blood to circulate to the muscles and vital organs)

Secretion (sensory receptors for pain, touch, heat, cold, and pressure – brain triggers necessary response)

aden glandhidr sweat

Epidermis Outer protective layer divided into 5 strata

Dermis (corium) Nourishes the epidermis, provides strength & supports blood vessels; divided into subcutaneous tissue & papillae (fingerprints)

Sebaceous (oil) glands

Lubricates hair & skin

Sudoriferous or apocrine (sweat) glands

Cools body & rids body of waste

In class activity: checking integrity of Meissner’s corpuscles (and dorsal

columns) with tuning fork & Pacinian corpuscles (and cortex)

with topesthesia

Nails

Nail terminology / conditions

Onychitis

Paronychia

Onychomycosis

Subungual

Clubbed nails, ridged nails (onychorrhexis versus Beau’s lines)

onych nail

-itis inflammation

onych/o nailmyc fungus-osis condition

sub- belowungu nail-al pertaining to

par-aroundonych nail-iacondition

Hair

trich/o hairlopec fox mangehirsute bristly hair

Hair Terminology / Conditions

Alopecia

Hirsutism

Trichomycosis

a- without, lack oflopec fox mange-ia condition

trich/o hairmyc fungus-osis condition

Color-related Medical Terminology

Xanthoma

Melanoma

Vitiligo

Leukoplakia

Jaundice

Ecchymosis

Erythroderma

Albinism

xanth yellow-oma tumor

melan/oblack-oma tumor

leuk/o whiteplakplate-iaconditionjaund yellow-ic(e) pertaining to

erythr/o red-derma skin

albin white-ismcondition

Image credits Integumentary system: http://

www.hilmersstudios.com/content/hilmersstudios/pages/medical/integumentary-system/integumentary-system_885x914.jpg

Tattooed baby: http://media-cache-ak0.pinimg.com/736x/fe/4e/97/fe4e979d094f7a5531475be974ee1b81.jpg

Nails: Pearson Medical Terminology 8th edition

Onychomycosis: http://www.aafp.org/afp/2001/0215/afp20010215p663-f5.jpg

Onychitis: http://www.alamy.com/thumbs/4/%7B0B0B237B-6E6F-4E3D-8964-B46CE886E4C6%7D/CT5YEW.jpg

Onychorrhexis: http://doctorv.ca/wp-content/uploads/2013/03/25ridging1219051.jpg

Beau’s line: https://www.dermquest.com/imagelibrary/large/026532HB.JPG

Hair: http://terriskitchenuk.files.wordpress.com/2012/01/hair2.jpg

Fox mange: http://static.bips.channel4.com/bips/orig/foxes-live-wild-in-the-city/articles/30f70746-2cd3-430c-a64e-2a309cc2b727.jpg

Alopecia: http://www.5138hairtherapy.com/upload/image/20130410/20130410053059_35065.jpg

Trichomycosis (axillaris): http://upload.wikimedia.org/wikipedia/commons/0/05/Trichomycosis-axillaris-armpit.jpg

Hirsutism: http://api.ning.com/files/aYVIEODNd2OL0BLqcPri-fxqPbnNGsJzGGSq0pieXwMXteoUM0w3u0cemQC7cud*bE1NSsR-XP1F-TYFOeBPc-EVTfqK1*Aq/Hairynevuswhereapersonhaspatchesofexcesshairgrowthorhirsutism.jpg?width=400&height=467

Xanthoma: http://1.bp.blogspot.com/_spPW5leBYZ8/TFlLMoD3ObI/AAAAAAAAAGQ/nuyNfuv5rGY/s400/Xanthelasma.jpg

Melanoma: https://www.melanomacenter.com/images/slide2.jpg

Leukoplakia: http://s3.amazonaws.com/crp.bdg/2012/07/24/17/55/33/286/leukoplakia.png

Jaundice: http://www.google.com/imgres?imgurl=&imgrefurl=http%3A%2F%2Fcommons.wikimedia.org%2Fwiki%2FFile%3AJaundice_eye_new.jpg&h=0&w=0&tbnid=NaWpsrWMmyizsM&zoom=1&tbnh=146&tbnw=345&docid=QEBQgYyNVXvINM&tbm=isch&client=firefox-a&ei=4oXSU_b9K5KpyAS3oICICg&ved=0CAUQsCUoAQ

Erythroderma: http://1.bp.blogspot.com/-OtPj7wcv1BI/Ubn6IJnrMbI/AAAAAAAAAGw/nU5R4jOWV0g/s1600/a9.jpg

Albinism: http://i.huffpost.com/gen/1194752/thumbs/o-ALBINO-GORILLA-INBRED-facebook.jpg