Anatomy & Physiology Question #11


A patient has an elevated white blood cell (WBC) count of 1200. Which should the nurse identify as the purpose of lymph nodes in addition to filtering lymph fluid?


  1. Trap hormone, cancerous cells and bacteria
    • Rationale:
  2. Trap macrophages, cancerous cells and bacteria
    • Rationale:
  3. Trap antibodies and bacteria
    • Rationale:
  4. Trap antigens and bacteria
    • Rationale:



The correct answer is B. The lymph nodes contain lymphocytes, a type of white blood cell, which includes B cells and T cells and circulate through the bloodstream. They can filter the fluid to screen for and filter out bacteria, cancerous cells, and infections. This includes the body’s own macrophages which are special WBC that engulf bacteria. Lymph does not trap antigens or antibodies.

Learning Outcomes

Test Taking Tip

Video Rationale