One of the constituents of the pancreatic juice while poured into the duodenum in humans, is

Step-by-step solution

Trypsinogen is the precursor form or zymogen of the pancreatic enzyme trypsin. It is found in pancreatic juice, along with amylase, lipase and chymotrypsinogen. It is activated by enteropeptidase which is found in the intestinal mucosa, to form trypsin.