Match the Term with the Appropriate Description

Multiple Choice

Match the term with the appropriate description.
-histamine

A) lipids that cause smooth muscle relaxation and vasodilation
B) lymph nodules aggregated in the small intestinal wall
C) rounded epithelial structures found in the medulla of thymus
D) areas of a lymph node where lymphocytes divide
E) a chemical released from mast cells that causes vasodilation