Exam 9: The Immune System and Mechanisms of Defense

Which one of the following types of T cells is a critical component of the immune system because it stimulates and enhances the activity of other components of the immune system?

The human body uses three lines of defense to protect against pathogens. Match each of the following categories of defense to the type of cell or mechanism involved in the defense. Answers may be used more than once. -production of antibodies by plasma cells

Which one of the following would result in passive immunity?

Why do some physicians advise patients with a bladder infection to drink a lot of cranberry juice?

Match each component of the lymphatic system to its function. -filters microorganisms and cellular debris from lymph

The advantage of having memory cells in specific defenses is that

Once a prion enters a nerve cell, it essentially

When comparing viruses and bacteria, which one of the following statements is CORRECT?

Ebola virus can be transmitted via

The only T lymphocyte that directly attacks and destroys other cells is the ________ T cell.

Infection by HIV can eventually lead to the development of a condition called ________, which is diagnosed when the T helper cell count drops below ________.

HIV is classified as a retrovirus because

Which of the following leukocytes is most likely to be directly involved in the destruction of flukes (a parasitic flatworm)?

All of the following are involved in the generation of an allergic response EXCEPT which one?

Match each component of the lymphatic system to its function. -transports lymph in the body

Which one of the following diseases is caused by a virus?

Which one of the following is characteristic of T lymphocytes but NOT B lymphocytes?

An immunization that uses prepared antibodies from a human or animal donor and that does not provide long-lasting protection is called ________ immunity.