ATI RN
Questions on Immune System Questions
Question 1 of 5
What is the term for immunity from maternal antibodies?
Correct Answer: C
Rationale: Natural passive is from maternal antibodies; active (A, B) involves own response, artificial passive is injected.
Question 2 of 5
What is the role of T-regulatory cells?
Correct Answer: C
Rationale: T-regulatory cells suppress; killing is cytotoxic T, antibodies are B cells, phagocytosis is macrophages.
Question 3 of 5
The complement system's primary function is to:
Correct Answer: B
Rationale: Complement enhances clearance; cytokines are signaling, T cells are adaptive, antibodies aren't stored.
Question 4 of 5
With regard to the thymic medulla (ANAT2020 only): It is characterized by a central artery.
Correct Answer: B
Rationale: A central artery is characteristic of splenic white pulp, not the thymic medulla.
Question 5 of 5
formed of C.T. few smooth muscle, circular muscle
Correct Answer: A
Rationale: Tunica media contains connective tissue (C.T.), smooth muscle, and circular muscle in lymphatic vessels; stratum spinosum is skin-related.