Lecturer
Integumentary System
Skin is the largest organ of the body comprising 15 % of total body weight.
Layers of the skin:
A. Epidermis
B. Dermis
C. Subcutaneous tissue
Epidermal appendages:
- Hair
- Nails
- Glands: two types of skin glands:
1. Sweat Gland
Eccrine sweat glands: are widely distributed and open directly onto the skin surface
Apocrine sweat glands: open into hair follicle in axillary and genital areas
2. Sebaceous glands: Produce sebum (oily secretion)
Skin Function:
- Protective function
- Identification color, fingertips
- Sensory preceptor
- Thermoregulation function
- Stores water, fat and vitamin D
- Promoting wound repair
- Facilitate Joint movement
- Excretory function
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