INTEGUMENTARY SYSTEM
by Meenaahsree Krishnan
1. HAIR
1.1. composed of keratinized dead cells
1.2. hair, hair follicles, sebaceous gland, sweat glands, nails
1.3. to protect & insulate
1.4. hair colour produced by melanocytes
2. SEBACEOUS GLAND
2.1. simple branched alveolar glands
2.2. sebaceous follicle
3. SWEAT GLANDS
3.1. merocrine sweat glands
4. NAILS
4.1. keratinized epidermal cell
4.2. protect fingers & toes
4.3. nails production - nail root
5. INTEGUMENT INJURY
5.1. several steps involved in repairing
5.2. classification of burn
5.2.1. first-degree burn
5.2.2. second-degree burn
5.2.3. third-degree burn
6. EFFECTS OF AGING
6.1. sensitivity of immune system reduced
6.2. muscle become weaker, bone strength decrease
6.3. skin become dry & often scaly
6.4. hair thins & changes colour
6.5. sagging & wrinkling of skin
6.6. ability to lose heat decrease
6.7. skin repair proceed slowly
7. PROVIDE PROTECTION FOR OTHER BODY SYSTEM
7.1. skeletal system
7.2. muscular system
7.3. nervous system
7.4. endocrine system
7.5. cardiovascular system
7.6. lymphatic system
7.7. respiratory system
7.8. digestive system
7.9. urinary bladder
7.10. reproductive system
8. INTRODUCTION
8.1. largest system of the body
8.2. made of 2 parts
8.2.1. cutaneous membrane -(outer epidermis, inner epidermis)
8.2.2. accessory structure -(originate in the dermis)
8.3. subcutaneous layer
8.3.1. below the dermis
8.4. function
8.4.1. protection
8.4.2. maintain body temperature
8.4.3. synthesize vitamin D3
8.4.4. stores lipid
9. EPIDERMIS COMPOSED OF STRATA WITH VARIOUS FUNCTION
9.1. stratum germinativum
9.2. stratum spinosum
9.3. stratum granulosum
9.4. stratum lucidum
9.5. stratum corneum
10. FACTORS INFLUENCING SKIN COLOUR
10.1. pigments
10.1.1. carotene
10.1.2. melanin
10.2. blood circulation (red blood cells)
10.3. function of melanocytes
10.3.1. protect skin from sun damage
10.3.2. skin colour depends on melanin production
10.4. capillaries & skin colour
10.4.1. oxigenated red blood contributes to skin colour
10.4.2. cyanosis
11. EFFECT OF SUNLIGHT ON SKIN
11.1. skin cancer
11.1.1. basal cell carcinoma
11.1.2. malanoma