The primary function of lymphatic capillaries is t

ATI RN

ATI RN Test Bank

The primary function of lymphatic capillaries is to:

A. Transport oxygen to cells B. Absorb excess interstitial fluid and proteins C. Produce insulin D. Transport carbon dioxide away from cells

Correct Answer: B

Rationale: Lymphatic capillaries absorb excess fluid and proteins from tissues.

Lymph is filtered by the:

A. bone marrow B. kidneys C. lymph nodes D. spleen

Correct Answer: C

Rationale: Lymph nodes filter lymph, removing pathogens.

Which antibody class is correctly matched with where it is found?

A. IgG - on basophils and mast cells B. IgD - on immature B cells C. IgA - secretions such as milk and saliva D. IgE - in circulation

Correct Answer: C

Rationale: IgA is found in secretions like milk and saliva.

Tissue rejection is due to the action of

A. cytotoxic T cells B. helper T cells C. IgE antibodies D. memory B cells

Correct Answer: A

Rationale: Cytotoxic T cells attack foreign tissue in rejection.

Regarding the proportion of circulating lymphocytes

A. the B cell make up 50% B. the T cell make up 60-70% C. neutrophils make up 90% D. Plasma cells make up 50%

Correct Answer: B

Rationale: T cells are 60-70% ; B cells are 10-20% , neutrophils are not lymphocytes , and plasma cells are rare .

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