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ATI RN · Obstetrics and Pediatrics · Pediatric Immunization Practice Questions

Full Question & Rationale Repository

Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Makes integrins more 'sticky'

A. Diapedesis

B. Chemotaxis

C. G-CSF

D. Chemokines

Correct Answer: Chemokines

Question 2 of 5

The interaction of which molecule on the membrane of cells with its ligand signals apoptosis?

A. B7 (CD80/86)

B. CD40

C. CTLA-4 (CD152)

D. Fas (CD95)

Correct Answer: Fas (CD95)

Question 3 of 5

Lymphocyte passage (diapedesis or transmigration) occurs at the between adjacent endothelial cells then into the tissues.

A. Gap junction

B. Tight junction (zonula occludens)

C. Adherens junction (zonula adherens)

D. Desmosome (macular adherens)

Correct Answer: Adherens junction (zonula adherens)

Question 4 of 5

The adaptive immune system develops from stem cells originating in the

A. Fetal thymus

B. Fetal liver and bone marrow

C. Placenta

D. Germinal centers of the spleen

Correct Answer: Fetal liver and bone marrow

Question 5 of 5

Matching: Immunodeficiency - Most severe of congenital immunodeficiencies

A. DiGeorge syndrome

B. Severe combined immunodeficiency (SCID)

C. Omenn syndrome

D. Reticular dysgenesis

Correct Answer: Severe combined immunodeficiency (SCID)

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