Correct! Although the lymph node is not physically compartmentalized, it does show three functional regions. The paracortex is the region situated between the cortex and the medulla. Although its boundaries are not clearly delineated, this region can be distinguished by its lack of lymphoid nodules and by the presence of unique blood vessels.

What is the name of the unique blood vessels found in the paracortex of lymph nodes?

Why were these vessels named in this way?

What is the function of these vessels?

Histology Scavenger Hunt!

Take a screenshot of a high endothelial venule in the paracortex, from Slide 42: Lymph Node, H&E.