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 B
Explanation
A. Lymph nodes:
Lymph nodes are structures that filter lymph and house immune cells, but they are not B or T cells themselves.
B. Lymphocytes:
B and T cells are types of lymphocytes, which are white blood cells involved in the immune response.
C. Tonsils:
Tonsils are lymphoid tissue that helps trap pathogens but are not cells.
D. Antibodies:
Antibodies are proteins produced by B cells, not cells themselves.
Correct Answer is C
Explanation
A. Red, like blood:
Lymph is typically clear to pale yellow; it lacks red blood cells, which give blood its red color.
B. Formed when fluid is filtered across the subclavian veins into the tissue spaces:
Lymph forms from interstitial (tissue) fluid, not from fluid filtered from veins into tissues.
C. Formed from tissue fluid:
Lymph originates as interstitial fluid that enters lymphatic vessels and is transported back into the circulatory system.
D. Pumped by the left heart into systemic circulation:
Lymph is not pumped by the heart; it moves through the lymphatic system via muscle contractions and valves.
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