The Subcutaneous Layer Quiz
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Questions and Answers

What is the primary component of the subcutaneous layer?

  • Elastin fibers
  • Collagen fibers
  • Lymphatic vessels
  • Adipose tissue (correct)

    • What is the function of the subcutaneous layer in infants and small children?

  • To aid in temperature regulation (correct)
  • To generate energy for growth
  • To provide structural support to the skin
  • To produce vitamin D

    • What is the main purpose of abdominoplasty (tummy tuck)?

  • To reduce the size of the liver
  • To tighten loose abdominal skin (correct)
  • To strengthen the abdominal muscles
  • To remove excess abdominal fat

    • What is the term for the excessive accumulation of abdominal fat?

    <p>Central adiposity</p> Signup and view all the answers

    What does liposuction primarily remove?

    <p>Subcutaneous adipose tissue</p> Signup and view all the answers

    What is the role of the subcutaneous layer in stabilizing the skin?

    <p>To anchor the skin to the muscles</p> Signup and view all the answers

    Where does the transfer of pigmentation take place in individuals with pale skin?

    <p>Stratum basale and stratum spinosum</p> Signup and view all the answers

    What is the disorder that results from a deficiency or absence of melanin production?

    <p>Albinism</p> Signup and view all the answers

    Where are the melanosomes destroyed by fusion with lysosomes?

    <p>Keratinocytes</p> Signup and view all the answers

    What is the pigment produced by melanocytes?

    <p>Melanin</p> Signup and view all the answers

    What are the two types of melanin?

    <p>Pheomelanin and eumelanin</p> Signup and view all the answers

    Where are the melanosomes larger and more numerous in dark-skinned people?

    <p>Stratum granulosum</p> Signup and view all the answers

    What is the skin disorder characterized by the excessive accumulation of melanin?

    <p>Melasma</p> Signup and view all the answers

    Which pigment is responsible for the red tones in the capillaries of the dermis?

    <p>Hemoglobin</p> Signup and view all the answers

    What is the primary function of melanin in keratinocytes?

    <p>To protect DNA in cells from UV radiation</p> Signup and view all the answers

    Which pigment accumulates in epidermal cells and can be converted to vitamin A?

    <p>Carotene</p> Signup and view all the answers

    What is the role of UV radiation in stimulating the epidermis?

    <p>To produce melanin in keratinocytes</p> Signup and view all the answers

    What is the effect of severe sunburn on the epidermis and dermis?

    <p>It damages both the epidermis and dermis</p> Signup and view all the answers

    What is the primary function of melanosomes within keratinocytes?

    <p>To protect DNA in cells from UV radiation</p> Signup and view all the answers

    What is the effect of UV exposure on melanocytes?

    <p>It slowly increases melanin synthesis, peaking about 10 days after exposure</p> Signup and view all the answers

    What is the function of a small amount of UV radiation on the epidermis?

    <p>To produce a compound required for calcium ion homeostasis (vitamin D)</p> Signup and view all the answers

    Where does the transfer of pigmentation take place in individuals with pale skin?

    <p>Stratum basale and stratum spinosum</p> Signup and view all the answers

    What is the role of UV radiation in stimulating the epidermis?

    <p>Triggering melanin synthesis</p> Signup and view all the answers

    What is the primary function of melanosomes within keratinocytes?

    <p>Transferring pigmentation to color the keratinocytes</p> Signup and view all the answers

    What is the skin disorder characterized by the excessive accumulation of melanin?

    <p>Hyperpigmentation</p> Signup and view all the answers

    What does a deficiency or absence of melanin production lead to?

    <p>Albinism</p> Signup and view all the answers

    Which pigment is responsible for the red tones in the capillaries of the dermis?

    <p>Hemoglobin</p> Signup and view all the answers

    What is the primary function of melanosomes within keratinocytes?

    <p>Protect DNA from UV radiation</p> Signup and view all the answers

    What is the role of UV radiation in stimulating the epidermis?

    <p>Stimulating vitamin D synthesis</p> Signup and view all the answers

    What is the disorder that results from a deficiency or absence of melanin production?

    <p>Albinism</p> Signup and view all the answers

    Where are the melanosomes larger and more numerous in dark-skinned people?

    <p>Deep dermis</p> Signup and view all the answers

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