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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


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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