ATI RN
Lymphatic System Questions Questions
Question 1 of 5
Which type of antigen-presenting molecule is found only on macrophages, dendritic cells, and B cells?
Correct Answer: B
Rationale: MHC II is on APCs (macrophages, DCs, B cells); MHC I is universal.
Question 2 of 5
All of the following would have MHC-1 antigens except
Correct Answer: D
Rationale: Erythrocytes lack MHC-I (no nucleus), unlike nucleated cells like neurons.
Question 3 of 5
After which age are declines in the immune system most evident?
Correct Answer: C
Rationale: Immune decline (immunosenescence) is most evident after age 60.
Question 4 of 5
What is the primary function of the lymphatic system in relation to the circulatory system?
Correct Answer: C
Rationale: It drains excess fluid back to blood, maintaining fluid balance.
Question 5 of 5
In the lymphatic system, what is the role of lymphatic nodules (also known as lymphatic follicles)?
Correct Answer: A
Rationale: Lymphatic nodules produce lymphocytes, e.g., in tonsils or Peyer's patches.