Which cells are key to innate antiviral defense?

ATI RN

ATI RN Test Bank

A. B cells B. T cells C. NK cells D. Neutrophils

Correct Answer: C

Rationale: NK cells fight viruses innately; B and T cells are adaptive, neutrophils target bacteria.

Identify the centrally placed basophillically region.

A. White pulp B. Red pulp C. Germinal center D. Cortex

Correct Answer: A

Rationale: The centrally placed basophilic region in the spleen is the white pulp, rich in lymphocytes staining darkly.

All secondary lymphatic ergons except

A. lymph node B. tonsil C. thymus D. spleen

Correct Answer: C

Rationale: Thymus is a primary lymphatic organ; lymph nodes, tonsils, and spleen are secondary.

is irregular barrel shap that lined by fenestrated cells with non Contineons basement membrane

A. red pulp B. blood sinusoid C. splenic card D. white pulp

Correct Answer: B

Rationale: Blood sinusoids in the spleen are barrel-shaped, fenestrated, with discontinuous basement membranes.

small, round shape with acidophilic mass, surrounded by reticular cell

A. Pacinian Corpuscle B. hassall Corpuscle C. ruffini corpuscle D. white pulp

Correct Answer: B

Rationale: Hassall's corpuscles are small, round, acidophilic masses in the thymus medulla surrounded by reticular cells.

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