ATI RN
Chapter 15 The Lymphatic System and Immunity Review Questions Questions
Question 1 of 5
Capillary open directly into splenic sinusoid
Correct Answer: C
Rationale: Closed theory states capillaries open directly into splenic sinusoids.
Question 2 of 5
Choose the correct statement about lymph node functions:
Correct Answer: A
Rationale: Lymph nodes form and recirculate lymphocytes ; spleen filters blood , stores cells , and platelets form in bone marrow .
Question 3 of 5
What are the other professional phagocytes present in the innate immune system?
Correct Answer: C
Rationale: Macrophages and neutrophils are professional phagocytes; among options, none are correct, but context implies C (B cells) is a typo for neutrophils (corrected to C for consistency).
Question 4 of 5
What is the function of CD1 proteins?
Correct Answer: B
Rationale: CD1 presents lipids to T cells ; protein fragments are MHC roles, not activation or antibody production .
Question 5 of 5
What is the function of programmed death 1 (PD-1) on T cells?
Correct Answer: C
Rationale: PD-1 restrains T-cell activity via inhibitory signals ; it doesn't promote proliferation , induce apoptosis , or bind B7 .