Physio: Integumentary

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bananavocado
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192012
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Physio: Integumentary
Updated:
2013-01-17 22:56:12
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Physio Integumentary
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Physio: Integumentary
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  1. what's the largest organ in the body?
    the skin
  2. what's the functions of the integumentary system?
    • -regulates body temp
    • -retards water loss from deeper tissue
    • -houses sensory receptors
    • -protective covering
  3. The skin includes two distinctive layers. what are they?(top to bottom)
    epidermis, dermis
  4. epidermis: composed? what are the layers?
    • top to bottom
    • -stratum corneum
    • -stratum spinosum
    • -stratum basale
  5. dermis: composed?
    thicker and contains connective tissure that has collagenous and elastic fibers, epithelial tissue, smooth muscle tissue, nervous tissue, and blood.
  6. what's underneath the dermis? composed?
    • subcutaneous layer. 
    • masses of loose connective and adipose tissure that bind the skin to the underlying organs
  7. what happens in the stratum basale? which layer and how "deep"
    cells divide and grow and older epidermal cells are pushed away. 

    • epidermis.
    • deepest layer 
  8. what are the older cells called?
    keratinocytes. (when hardening, it's called keratinization)
  9. what's the stratum corneum?
    layers of tough, tightly packed dead cells that accumulate in the outer epidermis. 
  10. how are fingerprints formed?
    because of the dermal papillae passing between the ridges causes the boundary between the epidermis and dermis to be uneven.
  11. what's the reticular region of the dermis?
    • dense irregular connective tissue
    • collagenous and elastic fibres so your skin has resilience.
  12. name the 4 accessory organs of the skin.
    hair follicles, sebaceous glands, nails, sweat glands
  13. where does the hair NOT show up?
    palms, soles, lips, nipples and part of external reproductive organs.
  14. what's a hair follicle?
    tubelike depression where each hair develops 
  15. how are epidermal cells nourished?
    from dermal blood
  16. what's the hair bulb?
    where skin cells are compressed and keratin is added.
  17. where's the shaft?
    the part above the epidermis 
  18. how does color occur?
    b/c of melanin
  19. what's the purpose of the sebaceous gland?
    secretes an oily mixture of fatty material and cellular debris called sebum.
  20. what causes goose bumps?
    arrector pili muscles
  21. what's the purpose of the nails?
    protective covering. 
  22. what does each nail consist of?
    a nail plate that overlies a surface of the skin called nail bed. 
  23. what the whitish moon-shaped part called? why's it there?
    lunula. that's where most active growing occurs.
  24. how does a nail grow and how long?
    mitosis in the stratum germinativum. rate of 0.5-1.5 mm per week 
  25. skin gland consists?
    tiny tube that originates as a ball-shaped coil in the deeper dermis or superficial subcutaneous layer
  26. eccrine gland produce....
    produces perspiration.
  27. apocrine glands....
    found?
    axillary regions and groin and connect to hair follicles.
  28. ceruminous gland....
    secrete earwax
  29. what's another word for skin cancer?
    cutaneous carcinomas
  30. what are the three types of skin cancers
    ?
    • 1. squamous cell carcinoma 
    • 2. basal cell carcinoma 
    • 3. malignant melanoma 
  31. alopecia?
    • sudden hair loss. 
    • caused by hair follicles which stop producing 
    • male pattern baldness
  32. Acne Vulgaris
    • occurs in adolescence.
    • sebaceous glands become plugged with sebum, skin cells and bacteria.
    • pustules form and creates secondary infections.

    *treated with benzoyl peroxide products or accutane
  33. Tinea?
    fungal infection which forms ringworms, athlete's foot, jock itch or nail fungus. 

    To get rid: keep area dry and apply topical anti-fungal treatments
  34. Warts
    • made from your cells.
    • caused by the papilloma virus 
    • form a benign growth 

    Remove by freezing, drying or lazer.
  35. Psoriasis 
    • chronic inflammation of the skin
    • scaly plaques due to over growth of under lying skin

    genetic
  36. eczema 
    a symptom of an underlying condition 

    inflammatory disorder

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