Week 10: Tissue Integrity - ARC Flashcards
1
Q
Young vs Old Skin image (5)
A
- thinner epidermis
- flatter basement membrane
- Fewer melanocytes and langerhans cells
- diminished blood supply
- thinner subcut fat layer
2
Q
What are the age-related changes to the epidermis? (3)
A
- Thins
- bruising easily - T-cell Function declines
- Decrease in melanocytes and concentrated areas of melanocytes (lentigines and seborrheic keratoses)
3
Q
What are the consequences if the T-cells in the epidermis declines? (3)
A
- Increased risk for herpes zoster and herpes simplex
- increase in skin renewal time and decrease in the turnover of epidermal replacement
- inflammatory response takes longer
4
Q
What are the age-related changes to the dermis? (4)
A
- thinner
- collagen synthesis decreases (skin can tear more easily)
- decreased blood vessel (skin temp increases)
- elastin thickens and fragments
5
Q
What is the function of the dermis? (2)
A
- Provides a supportive layer of connective tissue made of collagen
- Supports hair follicles, sweat and sebaceous glands, nerve fibers, muscle and blood vessels
6
Q
What are the age-related changes to the hypodermis (subcut)? (5,7)
A
- Fat distribution changes
- layers of fat atrophies in some areas (hands, face, feet) - Nails have slower growth, become thinner. fragile, brittle and more prone to splitting
- more opaque - Changes in hair colour quality and distribution
- Reduced efficiency of sweat (eccrine) glands
- Reduction in sebaceous glands
7
Q
What are ARC to hair and nails determined by?
A
- genetics
8
Q
What are ARC to hair for men? (2)
A
- lose hair (75% by age 70)
- Hair increases in ears, nose and eyebrows
9
Q
What are ARC to hair for women? (2)
A
- decreased hair
- Can lose hair in their lower legs that can be misinterpreted as peripheral vascular disease
10
Q
What are ARC to nails? (4)
A
- brittle
- harder
- thicker
- rate of growth decreased
11
Q
What occurs to shape of nails (2)
A
- flat or concave
- vertical ridges can appear
