Immunoglobulins have two light chains and two heav

ATI RN

ATI RN Test Bank

Immunoglobulins have two light chains and two heavy chains.

A. TRUE B. FALSE C. D.

Correct Answer: A

Rationale: Ig structure is two heavy, two light chains.

Foreign particles that are injected into the skin are likely to enter the lymphatic system

A. rapidly B. slowly C. not at all, because lymphatic valves prevent this D. not at all, because the skin lacks lymphatic capillaries

Correct Answer: A

Rationale: Skin has lymphatic capillaries that rapidly take up injected foreign particles.

In specific immunity, competent T-cells are activated by

A. plasma cells B. complement C. antibodies D. interleukin-1

Correct Answer: D

Rationale: IL-1 from antigen-presenting cells activates T cells in specific immunity.

Where are the tonsils, a part of the lymphatic system, located in the human body?

A. Throat B. Abdomen C. Brain D. Liver

Correct Answer: A

Rationale: Tonsils are located in the throat, guarding against ingested/inhaled pathogens.

The primary function of the lymphatic system in immune defense includes:

A. Production of antibodies B. Transporting oxygen to cells C. Filtration of red blood cells D. Removal of carbon dioxide

Correct Answer: A

Rationale: It supports antibody production via lymphocytes, not oxygen transport.

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