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Title:

Integumentary System

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Integumentary System We ve got you covered. Functions Protection Excretion Body temperature Cutaneous sensation Vitamin D synthesis Blood reservoir Epidermis ... – PowerPoint PPT presentation

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Title: Integumentary System


1
Integumentary System
  • Weve got you covered.

2
Functions
  • Protection
  • Excretion
  • Body temperature
  • Cutaneous sensation
  • Vitamin D synthesis
  • Blood reservoir

3
Epidermis
  • 5 layers
  • Outer layer-20-30 cells thick, dead cells
  • Innermost layer-Basal layer
  • Growing layer- single layer columnar cells
  • melanocytes

4
Dermis
  • Mainly connective tissue
  • Blood vessels, nerves, oil and sweat glands

5
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6
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7
Skin Color
  • 3 pigments
  • Melanin- brown-yellow
  • Carotene- yellow-orange
  • Hemoglobin- (red blood cells) red

8
Accessory organs
  • Hair
  • Flexible
  • Produced by hair follicle

9
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10
Nails
  • Dead cells of keratin
  • Protects tips of fingers and toes

11
Sweat Glands (sudoiferous)
  • 2.5 million
  • Rids body of excess water and other wastes
  • Evaporates to cool body

12
Sebaceous glands (oil)
  • Secrete sebum (oil)
  • Reaches surface where hair emerges
  • Prevents hair and skin from drying out
    waterproofs skin

13
Disorders of Skin
  • Acne
  • Occurs when oil mixes with dead cells and plugs
    up pores in the skin
  • Inflammation of oil glands
  • Hormones

14
Skin Disorders
  • Small pox
  • Necrosis
  • Psoriasis
  • Contact dermatitis
  • Androgenic alopecia
  • Albinism
  • Jaundice
  • ..\Desktop\slideshow-common-adult-skin-problems.ht
    m

15
Burns
  • 1st degree
  • Redness, epidermis is burned
  • 2nd degree
  • Partial-thickness
  • Epidermis and upper portion of dermis
  • 3rd degree
  • Full-thickness
  • Entire epidermis and dermis

16
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17
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18
Cancer
  • Basal cell carcinoma
  • Squamous cell carcinoma
  • Malignant melanoma

19
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