ATI RN
Questions on Immune System Questions
Question 1 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 2 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 3 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.
Question 4 of 5
Capsule of spleen is Covered by
Correct Answer: B
Rationale: The spleen's capsule is covered by peritoneum, a serous membrane.
Question 5 of 5
origin of thymus:
Correct Answer: C
Rationale: Thymus originates from endoderm (pharyngeal pouches) and mesoderm (stroma).