Integument Lecture: Layers of Skin and Epidermis
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Questions and Answers

What is the main purpose of the integument according to the text?

  • Absorbing ultraviolet light
  • Protecting deeper tissues from injury (correct)
  • Thermoregulation
  • Metabolizing vitamin D
  • Which layer of the epidermis is responsible for metabolizing vitamin D?

  • Stratum Basale (correct)
  • Stratum Lucidum
  • Stratum Spinosum
  • Stratum Granulosum
  • What is the function of the Stratum Corneum in the epidermis?

  • Absorbs ultraviolet light
  • Contains melanocytes for pigmentation
  • Metabolizes vitamin D
  • Provides waterproofing and protection (correct)
  • Which layer of the dermis is responsible for providing structural strength and elasticity to the skin?

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

    What is the main purpose of a shave biopsy?

    <p>Removal of a 'shave' superficial lesion tissue to establish a diagnosis</p> Signup and view all the answers

    Why is it recommended to biopsy characteristic areas in their diagnostic stage?

    <p>To capture histopathology at one point in time in evolution of a lesion</p> Signup and view all the answers

    'Come Let’s Get Sun Burnt' can be used as a mnemonic to remember the layers of which part of the integument?

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

    'Biopsy a primary lesion' is associated with which procedure according to the text?

    <p>'Shave Biopsy'</p> Signup and view all the answers

    'Removal of a 'core' of tissue to establish a definitive diagnosis or to remove a small lesion' describes which type of biopsy?

    <p>'Punch Biopsy'</p> Signup and view all the answers

    What is the size of a macule?

    <p>Less than 10mm</p> Signup and view all the answers

    Which skin lesion is characterized by a discontinuity of skin causing complete loss of epidermis and possible loss of dermis?

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

    What is the distinguishing feature of a vesicle?

    <p>Fluid-filled area less than 10mm</p> Signup and view all the answers

    Which histological change involves thickening of the cornified layer with a prominent granular layer?

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

    What causes the formation of weals on the skin?

    <p>Dermal edema</p> Signup and view all the answers

    Which term refers to the extravasation of RBCs into the skin or mucous membranes?

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

    In what condition do keratinocytes splay apart due to intraepidermal edema?

    <p>Spongiosis and Vesicles</p> Signup and view all the answers

    Which skin lesion is a solid, palpable area greater than 20mm in size?

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

    What is the main characteristic of excoriation?

    <p>A deep, linear scratch often self-induced</p> Signup and view all the answers

    What is a cyst?

    <p>An encapsulated cavity or sac lined by true epithelium filled with keratin</p> Signup and view all the answers

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