ATI RN
Questions on the Immune System Questions
Question 1 of 5
The process by which cells non-specifically engulf material and enclose it within a vacuole in the cytoplasm is known as:
Correct Answer: D
Rationale: Phagocytosis is engulfment; chemotaxis is movement, cytolysis is lysis, pavementing is adhesion, and pragmatism is unrelated.
Question 2 of 5
Which cells in lymph nodes engulf and destroy pathogens?
Correct Answer: A
Rationale: Macrophages phagocytose pathogens in lymph nodes; B and T cells are lymphocytes, and neutrophils are in blood.
Question 3 of 5
What drives lymph movement in the absence of a pump?
Correct Answer: B
Rationale: Respiratory movements aid lymph flow; blood pressure and arterial pulsation drive blood, venous flow is separate.
Question 4 of 5
What is the primary function of lymphatic valves?
Correct Answer: B
Rationale: Valves prevent lymph backflow; they don't increase pressure , filter , or produce lymph.
Question 5 of 5
The thoracic duct drains into the venous system at the junction of:
Correct Answer: A
Rationale: The thoracic duct drains at the subclavian-jugular junction ; others (B, C, D) are incorrect.