Anatomy Chapter 10

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Author:
LaizyDaizy79
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62973
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Anatomy Chapter 10
Updated:
2011-04-11 22:41:21
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Human Anatomy
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Description:
Integument
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  1. What is the scientific study of skin?
    dermatology
  2. Clinically, what might an overall paleness of the integument indicate?
    shock
  3. Clinically, what might an overall redness of the integument indicate?
    an increased body temp from exertion or infection
  4. Clinically, what might a localized redness of the integument indicate?
    localized irritation from trauma or infection such as diaper rash
  5. What organ is in the integument?
    skin
  6. Why is the skin considered an organ?
    it is made up of all 4 tissue types & performs a specific function to protect the body
  7. Which of the four primary tissue types make up the integument?
    epithelial tissue
  8. What are the two layers of the integument?
    dermis & epidermis
  9. What layer of tissue lies just deep to the integument?
    subcutaneous layer
  10. What type of tissue makes up the epidermis?
    keratinized stratified squamous epithelium
  11. The epidermis lacks blood vessels. What medical term describes this?
    avascular
  12. What three pigments contribute to skin color?
    hemoglobin, melanin, & carotene
  13. What is a harmless localized overgrowth of melanin-forming cells?
    a nevus (mole)
  14. What is a yellowish or brown spot caused by localized areas of excessive melanocyte activity rather than in increase in melanocyte number?
    freckles
  15. What is a congenital anomaly that results in skin discoloration due to blood vessels that proliferate and form a benign tumor?
    hemangioma
  16. What are contours of the skin surface that form ridge patterns on the palmar aspect of the hand and the plantar surface of the foot?
    friction ridges
  17. What layer of the dermis is superficial and contains capillaries and sensory receptors?
    papillary layer
  18. What layer of the dermis is deeper and contains large amounts of collagen and consists primarily of dense irregular connective tissue?
    reticular layer
  19. What are lines of cleavage?
    parallel bundles of collagen
  20. Nerve fibers are extensively dispersed throughout the dermis. What is this property of the distribution of nerves to or in a part of the body?
    innervation
  21. What two processes change the diameter of blood vessels and in the skin help regulate body temperature and blood pressure?
    vasoconstriction & vasodilation
  22. What are nails?
    scalelike modifications of the epidermis that form on the dorsal tips of fingers and toes
  23. What are the functions of the nails?
    protection & improve grip
  24. What is the area of active growth in a nail?
    nail matrix
  25. What is the whitish semilunar area at the proximal end of a nail?
    lunula
  26. What is hair?
    a filament of keratinized cells
  27. What is the fine, unpigmented, downy hair that first appears on the fetus in the last trimester?
    lanugo
  28. What is the fine, unpigmented or lightly pigmented hair found on the arms and legs?
    vellus
  29. What is the usually course, pigmented hair found in the scalp, eyebrows, eyelashes, axilla, and pubic region and the faces of adult males?
    terminal hair
  30. What is the swelling at the base of the hair and lying within the dermis?
    hair bulb
  31. What is the portion of a hair from the bulb to the surface?
    root
  32. What is the portion of the hair that extends beyond the skin surface?
    shaft
  33. What is the oblique tube of epithelium that surrounds a hair?
    hair follicle
  34. What smooth muscles produce "goose bumps"?
    arrector pili muscle
  35. What type of sweat gland functions in thermoregulation?
    merocrine glands
  36. What type of sweat gland produces a distinct odor?
    apocrine glands
  37. What type of gland produces sebum to keep the skin and hair from becoming dry?
    sebaceous glands
  38. What type of gland is located within the ear?
    ceruminous glands
  39. What glands produce milk?
    mammary glands
  40. What germ layer gives rise to the epidermis?
    ectoderm
  41. What germ layer gives rise to the dermis?
    mesoderm

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