Integumentary system
Dr. Peterson
Skin Anatomy and FunctionNailsHairColor-related Integumentary Te
rms
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
