Which lymphatic organ is responsible for filtering

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ATI RN Test Bank

Which lymphatic organ is responsible for filtering and monitoring the blood for foreign substances, including bacteria and viruses?

A. Thymus B. Spleen C. Tonsils D. Lymph nodes

Correct Answer: B

Rationale: The spleen filters blood for pathogens and debris.

Identify the outward signs of inflammation that results from increased capillary permeability.

A. Heat and redness B. Heat and pain C. Redness and swelling D. Swelling and pain

Correct Answer: D

Rationale: Increased permeability leads to swelling and pain.

Identify the specific defense cell that destroys virus-infected cells and cancerous cells.

A. B lymphocytes B. Cytotoxic T cells C. Helper T cells D. NK cells

Correct Answer: B

Rationale: Cytotoxic T cells target infected/cancerous cells.

Lymph flows:

A. in a circular pattern within the tissues B. away from the heart only C. toward the heart only D. both toward and away from the heart

Correct Answer: C

Rationale: Lymph flows toward the heart via one-way vessels; not circular , away only , or bidirectional ; capillaries are blood-related.

Complement membrane attack complex can be activated by

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

Correct Answer: D

Rationale: IgG and IgM activate complement; IgE , IgA , and IgD don't.

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