ATI RN
Lymphatic System Exam Questions Questions
Question 1 of 5
All functions of spleen except
Correct Answer: C
Rationale: Spleen filters blood , forms blood in fetal life , destroys RBCs and has immune functions ; lymphocyte formation in germinal centers is more lymph node-specific (C is less accurate).
Question 2 of 5
A 7 year old child came to the pediatric clinic presenting with a typical picture of acute tonsillitis, choose the true statement related to this case:
Correct Answer: A
Rationale: Acute tonsillitis causes regional lymph node inflammation ; metastasis is cancer-related , eosinophilia/basophilia are less typical (C, D).
Question 3 of 5
Which protein is involved in the lectin activation pathway and is made in the liver?
Correct Answer: A
Rationale: MASP (mannose-binding lectin-associated serine protease) activates the lectin pathway and is liver-made ; MCP, DAF, CD59 regulate complement.
Question 4 of 5
What are NKT cells?
Correct Answer: A
Rationale: NKT cells recognize lipids via CD1 ; they share NK and T-cell traits but are defined by CD1 specificity.
Question 5 of 5
Which cells in the thymus are responsible for expressing tissue-specific antigens through the action of AIRE?
Correct Answer: A
Rationale: Medullary thymic epithelial cells express tissue-specific antigens via AIRE for negative selection.