PTA 1003 - Ch. 4 - The Immune System

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Across
  1. 3. Lymphocytes that mature in the thymus and are involved in cell-mediated immunity, recognizing and destroying infected cells.
  2. 7. A state in which the immune system's ability to fight infectious disease is compromised or entirely absent.
  3. 8. Proteins produced by B-cells that recognize and bind to specific antigens, neutralizing or destroying them.
  4. 9. An immunity that occurs when antibodies produced by one person are transferred to another, such as from mother to child through breast milk.
  5. 11. Cells, such as neutrophils and macrophages, that engulf and digest microorganisms and debris to protect the body against infection.
  6. 14. Immunity Protection acquired by the introduction of an antigen, such as through natural exposure or vaccination, which primes the immune system for future encounters.
  7. 15. The study of the physiologic mechanisms that allow the body to recognize materials as foreign and neutralize or eliminate them.
  8. 18. A type of disease in which the immune system mistakenly attacks the body’s own tissues, failing to distinguish self from non-self.
  9. 19. White blood cells from the bone marrow that increase in response to infection and are involved in the direct killing of invading organisms through phagocytosis.
Down
  1. 1. Lymphocytes that mature in the bone marrow and are involved in humoral immunity by producing antibodies that target specific antigens.
  2. 2. Large phagocytic cells that play a key role in the immune system by clearing debris and presenting antigens to lymphocytes.
  3. 4. Small proteins released by cells, especially immune cells, that have an effect on the interactions and communications between cells.
  4. 5. An exaggerated or inappropriate immune response that results in tissue damage and disease, classified into four types.
  5. 6. Any foreign substance in the body that lacks the surface markers identifying it as part of the body, capable of eliciting an immune response.
  6. 10. The immunity that is the body's first line of defense that is non-specific and non-adaptive, which does not remember invaders for future encounters.
  7. 12. A specific type of immunity that involves memory, allowing the body to recognize and destroy foreign substances and prevent the proliferation of mutant cells.
  8. 13. A type of immunity in which T-cells are responsible for identifying and destroying infected or abnormal cells on a cell-to-cell basis.
  9. 16. Killer Cells (NK Cells) A type of lymphocyte that plays a role in the innate immune response by directly attacking cells that are infected by viruses or are cancerous.
  10. 17. Immunity mediated by antibodies produced by B-cells that circulate in body fluids such as blood and lymph to neutralize foreign substances.