Epidermis Cell Division and Skin Characteristics Quiz
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Questions and Answers

What is the main cell type found in the epidermis responsible for initiating immune responses?

  • Merkel cells
  • Langerhans cells (correct)
  • Keratinocytes
  • Melanocytes
  • Which mechanism helps the body maintain balance between heat produced and heat lost to the environment?

  • Adrenaline secretion
  • Negative feedback mechanism (correct)
  • Positive feedback mechanism
  • Thyroid regulation
  • What is the primary source of heat production in the body?

  • Digestive organs
  • Peristalsis
  • Liver metabolism
  • Skeletal muscle contraction (correct)
  • Which process involves the conversion of water to water vapor for heat loss?

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

    Where is the temperature regulating center located in the body?

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

    Which structure in the skin is responsible for vitamin D synthesis upon exposure to sunlight?

    <p>7-dehydrocholesterol</p> Signup and view all the answers

    What type of healing occurs without scar formation and is characterized by minimal tissue damage?

    <p>Primary healing</p> Signup and view all the answers

    What organ serves as a minor excretory system by eliminating sodium chloride through sweat?

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

    Which part of the skin plays a significant role in sensation and perception of touch, pressure, and vibration?

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

    What is the primary factor determining skin color in humans?

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

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