Most antibodies belong to the class

ATI RN

ATI RN Test Bank

Most antibodies belong to the class:

A. IgA B. IgD C. IgE D. IgG

Correct Answer: D

Rationale: IgG is the most common antibody class in serum.

What immune cell type predominates in the perifollicular regions of the white pulp in the spleen? (variation 2004)

A. T lymphocytes B. B Lymphocytes C. Macrophages D. Plasma cells

Correct Answer: B

Rationale: B lymphocytes predominate in perifollicular regions; T cells are in paracortex, macrophages are scattered.

Specificity and memory are the two major characteristics of:

A. The adaptive immune system B. The complementary immune system C. The humorous immune system D. The indirect immune system

Correct Answer: A

Rationale: Adaptive immunity has specificity and memory; innate lacks these, others (B, C, D) are not standard terms.

The incident that would most likely sensitize any Rh negative mother to the Rh antigen is delivery of the:

A. First Rh positive child B. First Rh negative child C. Second Rh positive child D. Second Rh negative child

Correct Answer: A

Rationale: First Rh+ child sensitizes Rh- mother; Rh- child (B, D) lacks antigen, second is post-sensitization.

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