1. Integumentary System Review

2. #1 The 5 Function(s) Physical protection Temperature Regulation
Protects against water loss
Excretion
Synthesis of vitamin D3

3. #2 and #3 Serous, Mucous and Synovial Membranes
Serous: line body cavities with no openings (thorax)
Mucous: line cavities that open to outside (anus, nose)
Synovial: line joints (elbow)

4. #4 Structure of Skin
2 layers – epidermis and dermis

5. #5 Which layer has the most accessories? The Dermis

6. #6 Epidermis Layers from outer to inner
1. Stratum Corneum
2. Stratum Lucidum
3. Stratum Granulosum
4. Stratum Spinosum
5. Stratum Basale

7. #7 Melanocytes in the Stratum Basale produce melanin

8. #8 Skin Color Is determined by 3 pigments
Hemoglobin – red pigment within rbc
Melanin – brown pigment in melanocytes
Carotene – orange-yellow pigment found in both epidermal cells and dermal fat cells

9. #9 Dermis contains... 1. Elastic and fibrous connective tissue
2. Blood vessels integrated within to help regulate body temperature
3. Nerve tissue carries sensory impulese
4. Hair follicles
5. Sebaceous Glands (oil)
6. Sweat glands

11. #10 Subcutaneous contains...
1. Adipose tissue (insulation)
2. Larger blood vessels
3. Larger nerve fibers

12. #11 Accessory Structures of the Integument
Hair follicles
Oil and sweat glands
Nails

13. #12 Hair Most skin surfaces Composed of recycled epidermal cells
Arrector pilli muscle controls “goosebumps”
Hair color is genetic

14. #13 & #14 Sebaceous Glands Attached to hair follicles (usually)
Secrete oil which helps keep hair soft & waterproof
Acne is a bacterial infection of the sebaceous gland

15. #15 Sweat Glands Most numerous in palms & soles
Sweat is mostly water, but also salts and urea and uric acid.
Some are specialized such as the ones in the ear (ear wax)
Response to heat or emotional stress

16. #16 &17 Regulation of Body Temperature
37°C or 98.6°F
Heat Lost = Heat Produced
Thermometer is called the hypothalamus (in the brain)
Internal regulation is called homeostasis (biological balance)
Sweating, shivering, flushing, are examples of temperature regulation

17. Homework Worksheet Review

18. Body Membranes
1. Cutaneous
2. Synovial
3. Mucous
4. Serous

19. Functions of Integumentary System
1. Protection
2. Thermoregulation
3. Excretion
4. Keeps water in or out
5. Vitamin D Synthesis

20. Structure of the Skin 1. Subcutaneous Layer 2. Stratum Basale
3. Epidermis
4. Dermis
5. Subcutaneous Layer
6. Epidermis
7. Stratum Corneum

21. … Structure of the Skin
8. Dermis
9. Stratum Basale
10. Stratum Corneum
11. Subcutaneous Layer
12. Dermis
13. Dermis
14. Epidermis
15. Dermis

22. Skin Color 1. Melanin, Carotene, Hemoglobin 2. Melanin 3. Melanin
4. Melanocytes
5. Sunlight
6. Genetics
7. Sun

23. Summer tans are temporary
Because skin is continually sloughed off and new cells are formed

24. Diagram of the Skin 13 Arrector Pili 12 Sebaceous Gland
11 Capillary 9 Stratum Basale
2 Dermis 5 Stratum Corneum
8 Dermal papilla 3 Subcutaneous
1 Epidermis Sweat Gland
14 Hair Follicle 7 Sweat Gland Duct
4 hair Shaft 6 Sweat Pore
16 Nerve Fiber 10 Touch Receptor

25. Accessory Structures 1. Hair Follicle 2. Sebaceous Gland
3. Arrector Pili
4. Sweat / Sudoriferous
5. Apocrine
6. Apocrine / Sebaceous
7. Sudoriferous

26. ….Accessory Structures
8. Keratin
9. Protection
10. Perspiration
11. Sebum
12. Cerumen
13. Pink

27. Temperature Regulation
1. 37°C °F
3. Respiration
4. Muscle
5. Hypothalamus
6. Skin

28. …Temperature Regulation
7. Blood
8. Perspiration
9. Loss
10. Heat

29. …. Temperature Regulation
11. Increased
12. Flushing
13. Sweat
14. Evaporation
15. Heat