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. Naturally acquired passive immunity
Passive immunity occurs when antibodies are transferred (e.g., from mother to baby); it does not involve the person’s immune system actively responding.
B. Naturally acquired active immunity
This occurs when a person is exposed to a pathogen, like the measles virus, and their body mounts an immune response, producing long-lasting immunity.
C. Artificially acquired active immunity
This is obtained through vaccination, not from infection.
D. Artificially acquired passive immunity
This refers to receiving antibodies (e.g., through injection of immune globulin), not through natural infection.
Correct Answer is B
Explanation
A. Digestive system through contaminated feces:
This is the port of exit for diseases spread by the fecal-oral route (e.g., cholera, hepatitis A).
B. Respiratory system by coughing or sneezing:
Droplet infections (e.g., flu, COVID-19, common cold) are primarily spread through respiratory secretions expelled via coughing or sneezing.
C. Central nervous system by contaminated cerebral spinal fluid:
While CSF can carry infections (e.g., meningitis), it is not a common port of exit.
D. Urinary system by contaminated urine:
Urinary tract infections may be transmitted this way, but not typically through droplets.
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