Continuing Medical Education Questions

1. Which lymph nodes drain the jejunum?

A superior mesenteric

B inferior mesenteric

C internal iliac

D para-aortic

E celiac

2. Antigen-presenting cells display intracellular antigens via _________ molecules, stimulating __________ cells specific for intracellular antigen.

A MHC class 2: CD8

B MHC class 2: CD4

C MHC class 2: NK

D MHC class 1: CD8

E MHC class 1: CD4

3. Which molecule is secreted by hepatic metastases in the paraneoplastic carcinoid syndrome?

A insulin

B a specific antibody

C serotonin

D epinephrine

E norepinephrine

4. Plasmacytoid dendritic cells are antigen-presenting cells found in greater proportion in the hepatic parenchyma compared to other lymphoid organs. Which anti-inflammatory cytokine do they secrete that attenuates the immune response in this organ?

A TNF-alpha

B IL-2

C IL-6

D IL-10

E IL-12

5. Right heart failure is a consequence of long-standing carcinoid syndrome. Which primary site may manifest as carcinoid syndrome in the absence of hepatic metastases?

A small intestine

B bronchi

C rectum

D stomach

E appendix

MHC, major histocompatibility complex.