Anatomy and physiology

A and P I Chapter 5 The integumentary system

1. Definition-integumentary system-

two layers-epidermis and dermis

hypodermis-

2. Epidermis-

a. structure-

function-

b. cell types-4 types

1) keratinocytes-

2) melanocytes-

3) dendritic cells-

4) tactile cells-

c. layers of the epidermis-

1) stratum basale-

2) stratum spinosum-

3) stratum granulosum-

4) stratum lucidum-

5) stratum corneum-

3. Dermis-

a. structure-

b. function-

c. layers-

1) papillary layer-

2) reticular layer-

cleavage lines-

flexure lines-

4. Skin color-

melanin-

carotene-

hemoglobin-

5. Appendages of the skin-

a. hair-

b. hair follicles-

c. nails-

d. sweat glands-

e. sebaceous glands-

6. Functions of the skin-

a. protection-

b. BT regulation-

c. sensation-

d. metabolic functions-

e. blood reservoir-

f. excretion-

7. Skin cancer-

a. basal cell carcinoma-

b. squamous cell carcinoma-

c. melanoma-

8. Burns-

first degree-

second degree-

third degree-

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