ATI RN
Chapter 15 The Lymphatic System and Immunity Review Questions Questions
Question 1 of 5
Where are B lymphocytes believed to mature in adult humans?
Correct Answer: B
Rationale: B lymphocytes mature in bone marrow in humans ; Bursa is in birds, compact bone is structural, liver is fetal only.
Question 2 of 5
An infection in the skin, such as a pimple, often produces pus. The major component of pus is:
Correct Answer: D
Rationale: Pus is mostly dead/dying neutrophils ; oxygen , nitrogen , NETs , or epithelial cells are minor components.
Question 3 of 5
The addition and subtraction of nucleotides at the junctions between V, D, and J gene segments creates antibody proteins with wide variations in the numbers of amino acids in their CDR3 regions. This variability in CDR3 length is important as:
Correct Answer: A
Rationale: CDR3 length variability it doesn't cross placenta ; diversity is broader, not just CDR3 , or affinity .
Question 4 of 5
Anemia
Correct Answer: D
Rationale: Anemia is characterized by low hemoglobin or red blood cell levels, reducing oxygen-carrying capacity, not related to leukocytes or cancer.
Question 5 of 5
Which of the following cell types is responsible for the humoral immune response?
Correct Answer: A
Rationale: B cells produce antibodies in the humoral immune response, targeting extracellular pathogens, unlike neutrophils, NK cells, or macrophages.