1. The Integumentary System
Chapter 3: Membranes and the Integumentary System
Lesson 3.2
The Integumentary System

2. The Integumentary System
functions of the integumentary system
anatomy of the skin
appendages of the skin

3. Functions of the Integumentary System
protects against
abrasion
chemical damage
drying out
UV radiation damage
regulates body temperature

4. Functions of the Integumentary System

5. Anatomy of the Skin
epidermis
dermis
hypodermis

6. Layers of the Epidermis

7. Epidermal Cells keratinocytes
produce keratin, form layers of epidermis
epidermal dendritic cells (Langerhans cells)
ward off infections
Merkel cells
touch receptors
Melanocytes
produce melanin

8. Dermis dense irregular fibrous connective tissue papillary layer
forms fingerprints
reticular layer

9. Hypodermis fibrous connective tissue adipose tissue padding insulation
energy storage

10. Appendages of the Skin sudoriferous (sweat) glands sebaceous glands
eccrine
apocrine
sebaceous glands
hair
nails

11. Review Questions

12. The two layers of the dermis are the ______________ layer and the reticular layer.

13. The outermost layer of the epidermis is the _____________.

14. The ________________ layer of the epidermis contains melanocytes.

15. Beginning at the stratum basale and moving up the next layer of the epidermis is the ____. A. stratum spinosum B. stratum granulosum C. stratum lucidum D. stratum corneum

16. Which of the following produce a pigment that acts as sunscreen. A
Which of the following produce a pigment that acts as sunscreen? A. Merkel cells B. epidermal dendritic cells C. keratinocytes D. melanocytes

17. The fingerprints are derived from patterns in the ____. A
The fingerprints are derived from patterns in the ____. A. reticular layer B. papillary layer C. hypodermal layer D. melanin layer

18. The ____ is found only on the palms, soles, fingers and toes. A
The ____ is found only on the palms, soles, fingers and toes. A. stratum corneum B. stratum lucidum C. stratum granulosum D. stratum basale

19. Merkel cells function as ____. A. sweat glands B
Merkel cells function as ____. A. sweat glands B. infection preventers C. touch receptors D. sunscreen

20. Injuries and Disorders of the Skin
Chapter 3: Membranes and the Integumentary System
Lesson 3.3
Injuries and Disorders of the Skin

21. Injuries and Disorders of the Skin
injuries of the skin
infections of the skin and membranes
inflammatory conditions of the skin and membranes
cancers of the skin

22. Injuries of the Skin decubitus ulcers burns bedsores
caused by restricted blood supply
burns
first-, second- or third-degree
caused by heat, chemicals, electricity or UV radiation
rule of nines
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23. Rule of Nines

24. Infections of the Skin and Membranes
viral infections
herpes varicella
herpes zoster
herpes simplex virus type 1 or type 2
human papillomavirus
warts
Maksym Bondarchuk/Shutterstock.com

25. Infections of the Skin and Membranes
fungal infections (tinea)
athlete’s foot
jock itch
ringworm
toenail fungus
bacterial infections
impetigo
cellulitis

26. Inflammatory Condition of the Skin
psoriasis
involves redness and irritation
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27. Cancers of the Skin basal cell carcinoma squamous cell carcinoma
malignant melanoma
ABCD rule
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