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ATI LPN · Anatomy and Physiology · Lymphatic System Test Questions

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Which protein is notably lower in lymph than in blood plasma?

A. Albumin

B. Globulin

C. Fibrinogen

D. Hemoglobin

Expert Explanatory Rationale

Correct Answer: Fibrinogen

Question 2 of 5

What is the role of NK cells in the immune system?

A. To produce cytokines and give off destructive chemicals

B. To recognize general characteristics of invaders

C. To identify unusual carbohydrates or proteins on the surface of target cells and kill them

D. To activate macrophages to secrete IL-1 and TNF

Expert Explanatory Rationale

Correct Answer: To produce cytokines and give off destructive chemicals

Question 3 of 5

Which of the following is not a function of the spleen?

A. site of stem cell maturation into T and B cells

B. destruction of blood-borne pathogens by macrophages

C. removal of worn-out blood cells and platelets by macrophages

D. storage of platelets

Expert Explanatory Rationale

Correct Answer: site of stem cell maturation into T and B cells

Question 4 of 5

The amount of antibody present in a blood plasma sample is a(n):

A. antigen

B. booster

C. titer

D. vaccine

Expert Explanatory Rationale

Correct Answer: titer

Question 5 of 5

Vaccination against many infectious diseases has provided enormous benefit in developed countries, leading to the virtual eradication of diseases such as polio, measles, smallpox, and others. However, efforts to create long-lasting vaccines against some viral infections, like Influenza and HIV, have not been successful to date because:

A. Viruses like HIV and Influenza undergo antigenic variation to evade previous immune responses

B. Viruses like HIV and Influenza spread too rapidly in the population for a vaccine to be effective

C. Viruses like HIV and Influenza have RNA, rather than DNA genomes, and are resistant to current vaccine strategies

D. Viruses like HIV and Influenza infect via mucosal surfaces, a route that is not well protected by current vaccine strategies

Expert Explanatory Rationale

Correct Answer: Viruses like HIV and Influenza undergo antigenic variation to evade previous immune responses

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