1. Appendages of the Skin Sebaceous glands Sweat glands Sebum Eccrine
Apocrine –
Axillary (?) and genital areas

2. Sweat and Its Function
Composition –
Function
B.O.!

3. Appendages of the Skin
Hair
Melanocytes
Figure 4.7c

5. Associated Hair Structures
Arrector pili
Sebaceous gland
Sweat gland
Figure 4.7a

7. Appendages of the Skin
Nails
Free edge
Body
Root of nail

8. Skin Homeostatic Imbalances
Infections:
Athletes foot
Boils and carbuncles
Cold sores (fever blister)

9. Skin Homeostatic Imbalances
Infections and allergies
Contact dermatitis
Impetigo
Psoriasis

10. Skin Homeostatic Imbalances
Burns
Associated dangers:

11. Frostbite (stages of frostbite)

12. Rule of Nines
Way to determine the extent of burns
Figure 4.11a

13. Severity of Burns
First-degree Second degree Third-degree

14. Click on me!

15. Critical Burns
Burns are considered critical if:
Facial burns/joints

16. Normal Skin Color Determinants (3 factors)
Melanin
Carotene
Hemoglobin
Cyanosis (poor oxygen)

17. Melanin
melanocytes

18. What happens to skin with too much sun?

19. Skin Cancer (BBC) Skin cancer is the most common type of cancer
Two types
Benign
Malignant
Skin cancer is the most common type of cancer

20. Skin Cancer Types (3 major types)
1. Basal cell carcinoma
2. Squamous cell carcinoma

21. Skin Cancer Types
3. Malignant melanoma

22. ABCD Rule A = Asymmetry B = Border irregularity C = Color D = Diameter
Two sides of pigmented mole do not match
B = Border irregularity
Borders of mole are not smooth
C = Color
Different colors in pigmented area
D = Diameter
Spot is larger then 6 mm in diameter

24. What happens to skin as we age?