Layers of Epidermis Quiz
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Questions and Answers

Which protein replaces cytoplasm in cells as they move upward?

  • Keratin (correct)
  • Collagen
  • Myosin
  • Fibrin
  • What is the primary function of keratin in hair, hooves, and nails?

  • To provide toughness and rigidity (correct)
  • To support internal organs
  • To provide color
  • To nourish the skin
  • What do reptile scales, bird feathers, and mammal hooves have in common?

  • Composition of keratin (correct)
  • Contain blood vessels
  • Ability to change colors
  • Presence of melanin
  • Which component is most likely NOT found in the dermis?

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

    What is a common feature of the armor of crocodilians, some lizards, and parts of a turtle's shell?

    <p>Dermal bone composition</p> Signup and view all the answers

    Which of the following structures are composed of both epidermal (keratinized) and dermal components?

    <p>Antlers of mammals</p> Signup and view all the answers

    What is the function of the epidermis in vertebrates?

    <p>Gives rise to hair, feathers, claws, and hooves</p> Signup and view all the answers

    Which type of integument secretion is responsible for hardening the cuticle in insects?

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

    Which layer of the arthropod integument secretes a complex cuticle made of chitin and protein?

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

    What is responsible for stiffening the cuticle in decapod crustaceans like lobsters?

    <p>Deposition of calcium carbonate</p> Signup and view all the answers

    Which invertebrate group has a soft epidermis containing a mucous gland for protection?

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

    What provides protection and skeletal support in arthropods?

    <p>Complex integument with a cuticle</p> Signup and view all the answers

    Which layer of the epidermis contains dead, keratinized cells that are shed as dandruff flakes?

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

    Which layer of the skin contains collagen and elastic fibers, and forms the dermal ridges that create fingerprints?

    <p>Papillary layer</p> Signup and view all the answers

    What is the primary component of hair that gives it its strength and rigidity?

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

    Which of the following factors primarily determines hair texture?

    <p>Hair diameter</p> Signup and view all the answers

    What is the primary function of the nails?

    <p>Protection of the fingertips and toes</p> Signup and view all the answers

    Which layer of the epidermis is responsible for the production of new keratinocytes?

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

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