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SKIN Health Science Technology I Dr. Halbert. INTEGUMENTARY SYSTEM. Three main layers of skin. Epidermis. Dermis. Subcutaneous Fatty Tissue. Epidermis. Outermost layer Cells constantly being shed Contains no blood vessels or nerves 5 layers Stratum corneum: outer part

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skin health science technology i dr halbert
SKIN

Health Science Technology I

Dr. Halbert

INTEGUMENTARY SYSTEM
slide3
Three main layers of skin

Epidermis

Dermis

Subcutaneous Fatty Tissue

epidermis
Epidermis
  • Outermost layer
  • Cells constantly being shed
  • Contains no blood vessels or nerves
  • 5 layers
    • Stratum corneum: outer part
    • Stratum germinativum: inner layer
dermis
Dermis
  • “true skin”
  • Made up of elastic connective tissue and contains vessels, nerves, glands, hair follicles
  • Top layer covered with papillae which form ridges which make up our fingerprints
subcutaneous fascia or hypodermis
Subcutaneous fascia or hypodermis
  • Innermost layer
  • Connects skin to the muscle underneath
sudoriferous glands
Sudoriferous glands
  • Sweat glands
  • Eliminate water, salts and some body wastes
  • Coiled tubes
sebaceous glands
Sebaceous glands
  • Oil glands
  • Produce sebum
  • Open in to hair follicles
  • When plugged results in pimple or blackhead
alopecia
Alopecia
  • Lack of hair
functions of the skin
Functions of the skin
  • Protection
  • Perception
  • Regulation of temperature
  • Storage of fat, water, vitamins
  • Absorption
  • Excretion
  • Production of Vitamin D
skin pigment
Skin pigment
  • Melanin: brown-black pigment, does absorb UV light resulting in a tan
  • Carotene: yellowish-red pigment
albino
Albino
  • Absence of color pigment
erythema
Erythema
  • Reddish color of the skin
  • Burns or congestion of blood in vessels
jaundice
Jaundice
  • Yellow discoloration
  • Liver or gallbladder disease or destruction of red blood cells
cyanosis
Cyanosis
  • Bluish discoloration
  • Insufficient oxygen
macules
Macules
  • Flat spots on the skin
  • Ex: freckles
papules
Papules
  • Firm raised areas
  • Pimples
  • Some stages of chicken pox
vesicles
Vesicles
  • Blisters
  • Fluid filled sacs
  • Chicken pox
pustules
Pustules
  • Pus filled sacs
  • Ex: acne
crusts
Crusts
  • Dried pus and blood
  • scabs
wheals
Wheals
  • Itchy elevated areas with irregular shape
  • Hives
ulcer
Ulcer
  • Deep loss of skin surface
acne vulgaris
Acne Vulgaris
  • Inflammation of the sebaceous glands
  • Usually in adolescence
  • Hormonal changes, increased secretion of sebum are underlying causes
athlete s foot
Athlete’s foot
  • Contagious, fungal infection usually of feet
  • Blisters, cracks, itching
skin cancer
Skin cancer
  • Melanoma, squamous cell carcinoma, basal cell carcinoma
  • May develop from moles
dermatitis
Dermatitis
  • Inflammation of the skin
  • Caused by any substance that irritates skin, often allergic
  • Example: poison ivy
eczema
Eczema
  • Non contagious, inflammatory disorder
  • Caused by allergy or irritant
  • Dryness, edema, erythema, itching, vesicles, crusts
impetigo
Impetigo
  • Highly contagious
  • Bacterial infection- Staph or Strep
  • Pustules and yellow crusts
psoriasis
Psoriasis
  • Chronic, non contagious, inherited
  • Thick red area with white scales
ringworm
Ringworm
  • Contagious, fungal infection
  • Usually circular with a clear central area
verrucae
Verrucae
  • Warts
  • Viral
  • Rough, hard, elevated
image citations
Image Citations
  • Slide 4: Delmar Learning’s Medical Terminology Image Library, Second Edition. Version 1.0. ISBN: 1-4018-1009-8.
  • Slide 10: 1/3/06 Erythema Nodosum, http://medimages.healthopedia.com/large/erythema-nodosum.jpg
  • Slide 11: 1/3/06 http://medicine.ucsd.edu/clinicalmed/jaundice.JPG
  • Slide 12: 1/3/06 Central Cyanosis, http://www.lf2.cuni.cz/Projekty/interna/foto/014/pic00011.jpg
  • Slide 16: 1/3/06 Papules, http://www.acnesource.org/images/pic_papules.jpg
  • Slide 17: 1/3/06 Vesicles, http://www.acponline.org/graphics/bioterro/vesicles.jpg
  • Slide 18: 1/3/06 Staphlococcal pustules, http://www.adhb.govt.nz/newborn/TeachingResources/Dermatology/StaphPustule/StaphPustule.jpg
  • Slide 20: 1/3/06 http://sprojects.mmi.mcgill.ca/dermatology/wheal3.jpg
  • Slide 21: 1/3/06 Skin Ulcer, http://www.liv.ac.uk/researchintelligence/issue18/images/W041128R.jpg
image citations1
Image Citations
  • Slide 23: 1/3/06 Acne Vulgaris, http://medimages.healthopedia.com/large/acne-vulgaris.jpg
  • Slide 24: 1/3/06 Athlete’s foot, tinea pedis, www.nlm.nih.gov
  • Slide 25: 1/3/06 Skin Cancer, www.healingdaily.com
  • Slide 26: 1/3/06 Allergic Contact Dermatitis, www.immunologyclinic.com
  • Slide 27: 1/3/06 Eczema, http://www.pg.com/science/skincare/Skin_tws_55/Skin_tws_55_03.jpg
  • Slide 28: 1/3/06, Impetigo, http://www.manbir-online.com/grafics/impetigo.jpg
  • Slide 29: 1/3/06, Psoriasis, www.monpso.net
  • Slide 30: 1/3/06, Ringworm, http://www.avte.net/AVTE2003/contents/hazards/zoonotic%20hazards/ha_ringworm.jpg
  • Slide 31: 1/3/06, http://vasculitis.med.jhu.edu/treatments/images/warts.jpg
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