Integumentary System Flashcards
Epidermis
Outermost layer; surface of the skin water retention
Epidermis- has five layers
Dermis
Middle layer with hair follicles, blood vessels and nerve glands ( sending signals area)
Subcutaneous or hypodermis
Hypo (less) dermis (surface)
Innermost layer with connective tissue adipose (fat) cells, blood vessels and nerve endings.
Barrier function
Protect against microorganisms, chemicals and physical damage
Pigmentation
Melanocytes are produce melanin for skin color protection from UV
Temperature regulation
Blood vessels and sweat glands regulate body temperature
Sensation
Nerve endings perceive touch
Vitamin D synthesis
Sun exposed helps produce vitamin D for calcium absorption
Excretion and absorption
Skin can absorb substances and exercise waste products 
Sebaceous gland
Secrete, subunit to lubricate skin and hair 
Sudoriferous Glands
Produce sweat for thermal regulation and excretion

Hair
Grows from follicles and serves sensory and protective functions
Observation of the skin
Skin color
Changes may indicate underlining disorders are conditions
Lesions
Various types may result from infections or pathologic processes
Tissue repair
Involves inflammation, proliferation and remodeling phases. Example a patient with the deep cut experiences, redness, swelling, and pain initially followed the formation of tissue in eventual scar formation
Effects of aging on the integumentary system
Changes include thinning loss of elasticity, reduce collagen, production, dryness, altered, pigmentation, decreased hair, growth, and brittle nails
Dermatitis
Inflammation caused by allergies or irritation
Psoriasis
Chronic overgrowth of epidermidis resulting in red scaly patches
Skin cancer
Abnormal growth of skin cells caused by UV radiation exposure 
Acne
Formation of pimples, blackheads and whiteheads, due to blocked hair follicles
Impetigo
Highly contagious bacterial infection, causing red sores, often around the mouth and nose
Alopecia
Hair loss, our botanist called by various factors
Allergies
Scan reactions triggered by immune response to allergies
Pressure ulcer
Localized injuries due to prolonged pressure in an inadequate blood supplies