Metals as Biomaterials
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Questions and Answers

Which property of metals makes them suitable as biomaterials?

  • Excellent electrical conductivity
  • Excellent thermal conductivity
  • Excellent mechanical properties
  • All of the above (correct)
  • What is the role of mobile free electrons in metals?

  • They act as a binding force between metal ions
  • They transfer thermal energy
  • They transfer electric charge
  • All of the above (correct)
  • What is the result of the closely packed atomic arrangement in metals?

  • Low specific gravity
  • High melting points
  • Low melting points
  • High specific gravity (correct)
  • What allows the position of metal ions to be altered without destroying the crystal structure?

    <p>Metallic bond</p> Signup and view all the answers

    Which of the following is NOT a use of metals as biomaterials?

    <p>Hearing aids</p> Signup and view all the answers

    What are some reasons why metals are used as biomaterials?

    <p>Metals are used as biomaterials due to their excellent electrical and thermal conductivity, mechanical properties, and corrosion resistance.</p> Signup and view all the answers

    What role do mobile free electrons play in metals as biomaterials?

    <p>Mobile free electrons in metals act as a binding force to hold the positive metal ions together and enable the quick transfer of electric charge and thermal energy.</p> Signup and view all the answers

    How does the closely packed atomic arrangement in metals affect their properties?

    <p>The closely packed atomic arrangement in metals results in high specific gravity and high melting points.</p> Signup and view all the answers

    What allows the position of metal ions to be altered without destroying the crystal structure?

    <p>The metallic bond, which is essentially nondirectional, allows the position of metal ions to be altered without destroying the crystal structure.</p> Signup and view all the answers

    What are some examples of medical applications of metals as biomaterials?

    <p>Some examples of medical applications of metals as biomaterials include total hip and knee joints, bone plates and screws for fracture healing, spinal fixation devices, and dental implants.</p> Signup and view all the answers

    Which law defines the flux (movement) of a drug across a non-porous polymer membrane?

    <p>Fick’s first law of diffusion</p> Signup and view all the answers

    If a polymer membrane is porous, what law would define the flux of a drug across the membrane?

    <p>Fick’s second law of diffusion</p> Signup and view all the answers

    What is the relationship between the porosity of a polymer membrane and the law that defines the flux of a drug across the membrane?

    <p>Porous membrane - Fick’s first law of diffusion</p> Signup and view all the answers

    Which law defines the flux (movement) of a drug across a non-porous polymer membrane?

    <p>Fick's second law of diffusion</p> Signup and view all the answers

    If a polymer membrane is porous, what law would define the flux of a drug across the membrane?

    <p>Fick's second law of diffusion</p> Signup and view all the answers

    What determines the movement of a drug across a non-porous polymer membrane?

    <p>The concentration gradient of the drug</p> Signup and view all the answers

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