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ATI LPN · Anatomy and Physiology · Good Questions About the Immune System

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

How many types of antibodies are there?

A. Five

B. Three

C. Two

D. Four

Expert Explanatory Rationale

Correct Answer: Five

Question 2 of 5

Rheumatoid arthritis is an _____________.disease that affects the_____________.

A. Allergic/cartilage

B. Autoimmune/nerves

C. Autoimmune/joints

D. Immunodeficiency/muscles

Expert Explanatory Rationale

Correct Answer: Autoimmune/joints

Question 3 of 5

Individuals or mice with defects in the biochemical pathways needed for loading peptides onto MHC molecules show greatly increased susceptibility to virus infections. Experiments examining the MHC molecules present on the surface of host cells in these individuals would show:

A. Normal numbers of MHC molecules expressed on host cells, but no peptides bound to them

B. Very low levels of total MHC proteins expressed on the cell surface

C. Normal numbers of MHC proteins on the surface but all of them bound to self-peptides not pathogen peptides

D. Very high levels of total MHC proteins expressed on the cell surface

Expert Explanatory Rationale

Correct Answer: Very low levels of total MHC proteins expressed on the cell surface

Question 4 of 5

The basic function of activated T cells is to battle

A. pathogens in blood or lymph

B. pathogens in interstitial fluid

C. pathogens that have already entered body cells

D. chemical mediators of immunity

Expert Explanatory Rationale

Correct Answer: pathogens that have already entered body cells

Question 5 of 5

Contain longitudinal smooth muscle, vasa vasorum

A. tunica media

B. tunica intima

C. tunica adventitia

D. stratum basale

Expert Explanatory Rationale

Correct Answer: tunica adventitia

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