Which one of the following is NOT true of lymph nodes:
A) they remove foreign materials from the lymph fluid
B) they have valves similar to those found in veins
C) they contain lymphocytes
D) they act as filters along the lymphatic vessels
E) they contain macrophages
Answer: B
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Lymphatic System
- Which one of the following is NOT an autoimmune disease:
- The relatively common autoimmune disease in which the thyroid gland produces excessive amounts of thyroxine is called:
- Allergic contact dermatitis following skin contact with poison ivy would normally lead to:
- With immediate hypersensitivity, the antibody class that binds to mast cells and basophils that trigger the release of histamine and other chemicals is:
- Which one of the following is NOT a type of immunosuppressive therapy given after surgery to prevent rejection of a graft:
- An isograft is a tissue graft donated by:
- Antigen presentation is essential for the activation and clonal selection of:
- The process by which antibodies bind to specific sites on bacterial exotoxins (toxic chemicals secreted by bacteria) to block their harmful effects is called:
- The specific antibody class that has the ability to cross the placental barrier and provide immunity to the fetus is:
- Which one of the following is NOT a method by which antibodies inactivate antigens:
- IgA:
- Which one of the following is NOT one of the antibody classes:
- Which one of the following is NOT true of the constant (C) regions of antibodies:
- Which one of the following is NOT true of basic antibody structure:
- Immune sera are used for all of the following EXCEPT:
- Vaccines are NOT for:
- What specific type of acquired immunity do vaccines provide:
- The specific type of acquired immunity that a fetus obtains from maternal antibodies that cross the placenta is called:
- B cells develop immunocompetence in the:
- Which one of the following is NOT true of macrophages:
- The specific foreign substances that an individual's immune system has the ability to recognize and resist is determined by:
- Regardless of whether it matures into a B cell or a T cell, a lymphocyte that is capable of responding to a specific antigen by binding to it is said to be:
- Which one of the following CANNOT be said about the history of immunity:
- Which of the following substances is NOT typically perceived as an antigen:
- The study of immunity is called: