Term | Definition |
5 Functions of Integumentary System | 1. Protection
2. Regulation
3. Sensation
4. Absorption
5. Secretion |
3 layers of skin | 1. Epidermis
2. Dermis
3. Subcutaneous Layer |
Epidermis | -4 layers
-contains melanin which gives skin its color |
melanin | gives skin its color |
4 layers of Epidermis | 1. stratum corneum
2. stratum lucidum
3. stratum granulosum
4. stratum germinativum |
Dermis | -"true skin"
-contains dermal papillae aka fingerprints
-2 layers |
2 layers of Dermis | 1. Papillary
2. Reticular |
shaft | visible portion of the hair |
papillae | found at the base of the hair follicle |
nail | consists of body, root and matrix (nail bed) |
lunula | crescent-shaped white area at base of nail |
matrix of nail | nail bed |
sebaceous glands | -located in the dermis
-secrete sebum |
sudoriferous glands | secrete perspiration |
skin cancer | most common of all cancers |
malignant | cancerous tumor |
basal cell carcinoma | most common form of skin cancer |
location of skin cancer | -nose is most common
-also occurs on head, neck, back, chest and shoulders |
squamous cell carcinoma | malignant tumor that affects the middle layer of the skin |
malignant melanoma | -originates in the melanin-producing melanocytes
-often occurs in the melanocytes of a pre-existing mole |
ABCDE Rule | Diagnostic tool for malignant melanomas |
acne vulgaris | -most often affects teens
-severity of the acne determines the most useful and beneficial treatment |
alopecia | -baldness or loss of hair
-most common is male-pattern baldness |
cellulitis | acute, spreading bacterial infection below surface of the skin |
contact dermatitis | -allergic reaction
-poison oak for example |
decubitus ulcer | -pressure sore or bedsore
-common location is coccyx
-4 stages I-4 (most severe) |
eczema | atopic dermatitis |
Herpes Zoster | -aka shingles
-viral infection that causes a painful rash that is also responsible for chicken pox
-painful, fluid-filled blisters
-treated with oral anti-viral meds |
hirsutism | thick abnormal hair growth |