Immunology Quiz #1: Immune system organs

1. A 6-year-old boy is brought to the physician because of recurrent bacterial infections and poor wound healing. Physical examination shows absence of tonsils. Laboratory tests reveal low levels of serum immunoglobulins. A biopsy of the patient's skin shows lack of plasma cells. Which of the following organs is most likely deficient in this patient? 

Question 1 of 5

2. A 22-year-old woman comes to the clinic complaining of fatigue and difficulty swallowing. Physical examination reveals an enlarged thyroid gland. Laboratory findings show high levels of circulating antibodies against thyroid peroxidase. The patient's condition is most likely mediated by an abnormal response in which of the following immune system organs? 

Question 2 of 5

3. A researcher is studying a group of mice that lack Peyer's patches. Compared to wild-type mice, these mice are expected to have a reduced ability to: 

Question 3 of 5

4. Following a splenectomy due to a traumatic injury, a 30-year-old man is found to have the following inclusions in his blood cells. What do these inclusions likely represent? div style="text-align: center;">

Question 4 of 5

5. A 2-year-old boy is diagnosed with DiGeorge syndrome. Which of the following complications is most directly associated with this condition? 

Question 5 of 5


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