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 (B)</p> Signup and view all the answers

What does liposuction primarily remove?

<p>Subcutaneous adipose tissue (C)</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 (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 (A)</p> Signup and view all the answers

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

<p>Albinism (B)</p> Signup and view all the answers

Where are the melanosomes destroyed by fusion with lysosomes?

<p>Keratinocytes (A)</p> Signup and view all the answers

What is the pigment produced by melanocytes?

<p>Melanin (A)</p> Signup and view all the answers

What are the two types of melanin?

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

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

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

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

<p>Melasma (D)</p> Signup and view all the answers

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

<p>Hemoglobin (C)</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 (C)</p> Signup and view all the answers

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

<p>Carotene (B)</p> Signup and view all the answers

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

<p>To produce melanin in keratinocytes (C)</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 (A)</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 (D)</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 (A)</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) (B)</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 (B)</p> Signup and view all the answers

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

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

What is the primary function of melanosomes within keratinocytes?

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

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

<p>Hyperpigmentation (C)</p> Signup and view all the answers

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

<p>Albinism (B)</p> Signup and view all the answers

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

<p>Hemoglobin (B)</p> Signup and view all the answers

What is the primary function of melanosomes within keratinocytes?

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

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

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

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

<p>Albinism (A)</p> Signup and view all the answers

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

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

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