Which of the following BEST describes the lymphatic vessels?
They are found only in lymph nodes
They have large pores and follow the venous pathway
They closely follow the path of the aorta
They are found only in the spleen
The Correct Answer is B
A. They are found only in lymph nodes
Lymphatic vessels are widespread throughout the body and not limited to lymph nodes.
B. They have large pores and follow the venous pathway
Lymphatic vessels have large, permeable walls and generally follow alongside veins, draining interstitial fluid back to circulation.
C. They closely follow the path of the aorta
Lymphatics follow venous, not arterial (aorta), pathways.
D. They are found only in the spleen
The lymphatic system is distributed systemically, not restricted to the spleen.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Gives active artificial immunity
Vaccines stimulate the body’s immune system to produce antibodies and memory cells, creating active immunity artificially.
B. Is a gamma globulin
Gamma globulin is a preparation of antibodies used for passive immunity, not a vaccine.
C. Contains antibodies
Vaccines usually contain antigens (weakened or inactivated parts of a pathogen), not antibodies.
D. Gives active natural immunity
Active natural immunity is obtained through actual infection, not vaccination.
Correct Answer is D
Explanation
A. Allergic reaction:
Allergic reactions are typically associated with overactive immune responses, not decreased T and B cell function.
B. Increase in antibodies:
Antibody production actually declines with age due to reduced B cell function.
C. Cancer:
Decreased immune surveillance can contribute to cancer risk, but the most direct consequence of T and B cell decline is susceptibility to infections.
D. Infections:
Reduced activity of T and B cells impairs the immune response, making older adults more prone to infections.
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