Integ Flashcards
The process of scar tissue formation
Fibrosis
Scar remain within the boundaries of the original wound
Hypertrophic scar
Scars that extends beyond tye boundaries of the originsl wound into normsl surrounding tissues
Keloid scars
Four phases of deep wound cleaning
Inflammatory phase, migratory phase, proliferative phase, maturation phase
Tissue filling the wound
Granulation tissue
The edges of wound involve only slight damage to superficial epidermal cells
Epidermal wound healing
2 types of skin wound healing
Epidermal wound healing, deep wound cleaning
Caused by staphylococcus aureus; characterized by small blisters containing pus that easily rupture and forms a yellowish crust
Impetigo
Disorder of hair follicles and sebaceous glands
Acne
Necrosis of the skin due to tissue compression & reduced circulation
Decubitus Ulcers / bed sores / pressure sores
Fluid-filled areas in the skin that develop when tissues are damaged
Bullae
Caused by increased mitosis in stratum basale, abnormal keratinization and elongation of dermal papillae tward the skin surface producing thicker than normal skin
Psoriasis
Inflammatory conditions of the skin
Eczema & dermatitis
Fungal infection affecting the keratinized portion of the skin, hair, nails
Ringworm
Chicken pox, measels, warts
Viral infections
Congenital disorder of the capillary of the dermis
Birthmarks
Development of patches of white skin
Vitiligo
Rare form of 2% of all skin cancers most prevalent life-threatening cancer in young women metastasize rapidly and can kill a person within moths of diagnosis
Malignant melanoma
20% of all skin cancers arise from squamous celld of the epidermis and have a variable tendency to metastasize
Squamous cell carcinoma
Most frequent 78% of all skin cancers tumors arise from cells in the stratum basale of the epidermis and rarely metastasize
3 types of skin cancer
Basal cell carcinoma, squamous cell carcinoma, malignant melanoma
Idication of yellowish discoloration
Liver problems
Bluish lips/skin color
Hypoxia / oxygen defficiency
Largest organ outside the body
Skin
Surface area of the skin
Approximately 2 sq. m
The skin weighs…
Appeoximately 6kg (4-5) and about 7% of the body weight
8 function of the skin
Protection, thermoregulation, absorption, immunizaty, sensation, excretion, blood reservoir, synthesis of vitamin D
Protects underlying tissues
Keratin
Resist invasion by microbes
Interlocked keratinocytes
Released by the lamellar granules retard evaporation of water
Lipids
Protects the skin and the hair from dying
Oilu sebum
Retards the growth of microbes
Perspiration (acidic pH)
Provides protection against UV rays
Melanin
2 types of sensation that arise in the skin
Tactile, thermal
Receptors in the epidermis and dermis
Free nerve endings corpuscle, pacinian corpuscle, merkel’s corpuscle
Active form of vitamin D
Calcitriol
Liberating sweat at its surface and by adjusting the flow of blood in the dermis
Thermoregulation
Sweating, removal of heat, water and other substances like salts CO2, lrganic molecules from the breakdown of CHON (ammonia, urea)
Excretion
Oily material that lubricates the skin and hair
Sebum
Recognize and process some microbe
Langerhans cells (stratum spinosum)