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    Bushong: Radiologic Science For Technologists, 11th Edition: Chapter 29: Human Biology Answers To Challenge Questions

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    Bushong: Radiologic Science For Technologists, 11th Edition: Chapter 29: Human Biology Answers To Challenge Questions

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    Bushong- chapter 29

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    Bushong- chapter 29

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    Download as rtf, pdf, or txt
    493 views2 pages

    Bushong: Radiologic Science For Technologists, 11th Edition: Chapter 29: Human Biology Answers To Challenge Questions

    Uploaded by

    gasai gasai
    Bushong- chapter 29

    Copyright:

    © All Rights Reserved
    Download as RTF, PDF, TXT or read online from Scribd
    Download as rtf, pdf, or txt
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    Bushong: Radiologic Science for Technologists, 11th Edition

    Chapter 29: Human Biology

    Answers to Challenge Questions

    1. a. As Low As Reasonably Achievable: it aims to produce quality image in the lowest


    possible application of radiation dosage in a specific procedure.

    b. 1838, Schneider and Schwann argued that cells are the basic fundamental unit of all
    plants and animals.
    c. It is a metabolic activity that is responsible for building small molecules into large
    ones.
    d. Carbohydrate is a macromolecule associated with energy storage for the cell.
    e. The following are the phases of cell development cycle; M, G1, S, and G2
    f. Tissue that covers an organ or body.
    g. The largest part of the cell where its organelles are, and enclosed by the cell
    membrane.
    h. It is a molecule which does not directly enter into a biochemical reaction. However,
    it acts as a catalyst that enables its chemical reaction to continue.
    i. A molecule containing carbon.
    j. A response to radiation exposure that does not appear for months, or even years.

    2. An X-ray produces radiation response in the human body when it interacts with
    electrons at the atomic level

    3. The ionization can disrupt molecular bonds and cause the large molecule to
    malfunction.
    Large molecule malfunctions when the ionizing radiation disrupts its molecular bond
    upon exposure.

    4. Atomic bomb survivors, American radiologists, cyclotron physicists, radium watch dial
    painters, patients irradiated in utero, ankylosing spondylitis patients.

    5. Cancer and leukemia, life span shortening, cataracts, bone cancer, childhood cancer,
    and leukemia, respectively.

    6. Hydrogen atom, water molecule.

    7. Stem cell are the immature or earliest stage of a cell before it develops into a mature
    cell.

    8. The human substance constitutes approximately 80% of water. Therefore, it is basically


    a structured aqueous suspension.

    Copyright © 2017, Elsevier Inc. All Rights Reserved.


    Answers to Challenge Questions 29-2

    9. Epithelium is a kind of tissue that serves as covering of an organ.

    10. A major component of muscle and functions as antibodies, enzymes, and hormones.

    11. They store energy for subsequent use by the cell.

    12. DNA is deoxyribonucleic acid.

    13. DNA.

    14. To channel molecules in and out of the cytoplasm.

    15. 10 kGyt (1 Mrad).

    16. G1, S, G2, M.

    17. The cell undergoes a mitosis-like division, and each of the resulting cells undergoes
    an additional mitosis-like division without DNA replication. See Figure 29-13.

    18. Spermatogonia, lymphocytes. Overall, early or immature cells are radiosensitive.

    19. Nerve cells.

    20. Three early effects are skin erythema, organ atrophy, and cytogenetic damage; three
    late effects are cancer, leukemia, and cataracts.

    Copyright © 2017, Elsevier Inc. All Rights Reserved.

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