Biology Chapter 9: Immunity and Lymphatic System
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Questions and Answers

What is the primary function of the integumentary system?

  • To synthesize vitamin D
  • To protect the body from invasion by micro-organisms (correct)
  • To aid in the removal of waste
  • To regulate body temperature
  • What is the main function of keratin in the skin?

  • To protect the skin from invasion (correct)
  • To regulate body temperature
  • To protect the skin from UV light
  • To synthesize vitamin D
  • What determines skin color?

  • Only melanin
  • A combination of melanin, carotene, and hemoglobin (correct)
  • Only hemoglobin
  • Only carotene
  • What is the deepest layer of the epidermis responsible for?

    <p>Cell division and growth</p> Signup and view all the answers

    What is the function of the dermis layer of the skin?

    <p>To contain most of the structures in the skin</p> Signup and view all the answers

    What is the condition characterized by the loss of melanin-producing cells?

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

    What is the primary function of the hair shaft?

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

    What is the main difference between eccrine and apocrine sweat glands?

    <p>Type of sweat produced</p> Signup and view all the answers

    What is the function of sebaceous glands?

    <p>Production of sebum</p> Signup and view all the answers

    What is the term for the white patches that appear on the skin when melanocytes disappear?

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

    What is the term for the nipple-like projections in the dermis that produce the prints on skin?

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

    What is the term for the layer of the skin that contains blood vessels, collagen, and elastic fibers?

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

    What is the function of the lunula?

    <p>To appear as a whitish moon-shaped area at the base of the nail body</p> Signup and view all the answers

    What layer of tissue connects the epidermis and dermis to other tissues?

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

    What is the main function of the lymphatic system?

    <p>To produce, transport, and store cells that fight infection</p> Signup and view all the answers

    What type of tissue is the hypodermis composed of?

    <p>Loose connective (adipose and areolar) tissue</p> Signup and view all the answers

    What is the function of the spleen in the lymphatic system?

    <p>To filter blood</p> Signup and view all the answers

    What is the name of the lymphatic organs that destroy bacteria in the wall of the intestines?

    <p>Peyer's patches</p> Signup and view all the answers

    What is the primary function of the lymphatic system in relation to tissue fluid?

    <p>To absorb excess fluid from the tissues</p> Signup and view all the answers

    What is the role of interferons in the immune system?

    <p>To protect non-infected cells from viral infection</p> Signup and view all the answers

    What is the result of the activation of complement proteins?

    <p>Formation of a membrane attack complex that bursts bacteria</p> Signup and view all the answers

    What is the function of natural killer cells?

    <p>To kill abnormal cells by releasing granules containing perforin</p> Signup and view all the answers

    What is a symptom of inflammation?

    <p>Redness due to increased blood flow</p> Signup and view all the answers

    What is phagocytosis?

    <p>The process of engulfing and digesting foreign particles or bacteria</p> Signup and view all the answers

    What is the term for the ingestion of microbes by cells?

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

    What is the type of immunity that involves the activation of B cells and the production of antibodies?

    <p>Antibody mediated immunity</p> Signup and view all the answers

    Which type of immunity is directed against intracellular pathogens, some cancer cells, and tissue transplants?

    <p>Cell mediated immunity</p> Signup and view all the answers

    What is the term for substances secreted by immune cells that have an effect on other cells?

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

    What is the process by which activated B cells transform into?

    <p>Plasma cells and memory cells</p> Signup and view all the answers

    What happens to leftover plasma cells after the immune response is over?

    <p>They undergo apoptosis and are destroyed</p> Signup and view all the answers

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