Which cells are key to the innate immune barrier i

ATI RN

ATI RN Test Bank

Which cells are key to the innate immune barrier in skin?

A. Keratinocytes B. T cells C. B cells D. Dendritic cells

Correct Answer: A

Rationale: Keratinocytes form a physical barrier; T and B cells are adaptive, dendritic present antigens.

Which cytokine suppresses immune responses?

A. IL-2 B. IL-6 C. IL-10 D. TNF-alpha

Correct Answer: C

Rationale: IL-10 suppresses; IL-2 boosts T cells, IL-6 aids B cells, TNF-alpha inflames.

Which cells are key to innate barrier defense?

A. Lymphocytes B. Keratinocytes C. T cells D. B cells

Correct Answer: B

Rationale: Keratinocytes form skin barriers; lymphocytes , T , and B cells are adaptive.

White pulp of spleen: Is contained within a reticular meshwork.

A. TRUE B. FALSE C. D.

Correct Answer: A

Rationale: White pulp is supported by a reticular meshwork of cells and fibers.

Where is the thymus gland located?

A. Lower part of the mediastinum B. Upper part of the mediastinum C. Behind the mediastinum D. In front of the mediastinum

Correct Answer: B

Rationale: The thymus gland is located in the upper part of the mediastinum, anterior to the heart and behind the sternum.

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