What kind of defense barrier is provided by the mu

ATI RN

ATI RN Test Bank

What kind of defense barrier is provided by the mucous membrane of the body?

A. Physical barrier B. Mechanical barrier C. Chemical barrier D. Biological barrier

Correct Answer: A

Rationale: Mucous membranes are physical barriers ; not mechanical , chemical , or biological .

Which DOES NOT provide long term immunity?

A. Artificially acquired active immunity B. Artificially acquired passive immunity C. Naturally acquired active immunity D. None of the above

Correct Answer: B

Rationale: Artificially acquired passive immunity (e.g., antibody injection) is short-term, unlike active immunity which generates memory.

Which of the following is not associated with mucosal surfaces?

A. mucus-secreting goblet cells B. lysozyme C. M cells D. white pulp

Correct Answer: D

Rationale: White pulp is in the spleen, not mucosal surfaces, unlike goblet cells, lysozyme, and M cells, which protect mucosal barriers.

The immune response is terminated or decreased by

A. suppressor B cells B. suppressor T cells C. both of the above D. none of the above; the immune response can only be stimulated, not terminated

Correct Answer: B

Rationale: Suppressor (regulatory) T cells dampen responses; no suppressor B cells , and termination occurs .

Antibodies are produced by ____________.

A. plasma cells B. T cells C. bone marrow D. Macrophages

Correct Answer: A

Rationale: Plasma cells secrete antibodies; T cells and macrophages don't.

$89/ 30 days

$150/ 90 days