Which immunoglobulin is first produced in neonates

ATI RN

ATI RN Test Bank

Which immunoglobulin is first produced in neonates?

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

Correct Answer: C

Rationale: IgE is minimal at birth; IgM is first, but among these, IgG from mother is present, corrected to IgM in context.

Identify the structure indicated by an arrow. Classify the tissue composing the structure.

A. Trabeculum, dense irregular connective tissue B. Central artery, smooth muscle C. Sinusoid, endothelium D. Nodule, lymphoid tissue

Correct Answer: A

Rationale: The arrow indicates a trabeculum, made of dense irregular connective tissue, providing structural support.

have peripheral dark small lymph with germinal center that have high B-lymph. low T-lymph.

A. Primary follicle B. secondary follicle C. Cortical sinus D. Para Cortex

Correct Answer: B

Rationale: Secondary follicles have germinal centers with high B-lymphocytes and low T-lymphocytes, staining dark peripherally.

when spleen Contract, circulation is closed, while when spleen relax. Circulation open

A. open theory B. open-closed theory C. closed theory D. none of above

Correct Answer: B

Rationale: Open-closed theory describes spleen circulation: closed when contracted, open when relaxed.

Control multiplication of helper, suppresser T-cell

A. thymopoietin B. thymic factor C. thymosin D. thymulin

Correct Answer: B

Rationale: Thymic factor controls helper and suppressor T-cell multiplication.

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