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