Digestive glands

Brunner's glands are present in the submucosa of the duodenum (small intestine), not the stomach.
They secrete an alkaline, enzyme-free watery mucus, not pepsinogen.

The pancreatic juice contains inactive enzymes (zymogens): trypsinogen, chymotrypsinogen and procarboxypeptidases, along with amylases, lipases and nucleases.
So what is actually poured into the duodenum is trypsinogen, not trypsin.
Trypsinogen is activated to trypsin in the intestine by enterokinase, an enzyme secreted by the intestinal mucosa (it is a constituent of intestinal juice, not pancreatic juice).
Trypsin in turn activates chymotrypsinogen to chymotrypsin, so chymotrypsin is also formed only inside the intestine.
Hence the constituent of pancreatic juice poured into the duodenum is trypsinogen.

Goblet cells are unicellular glands present in the mucosal epithelium of the alimentary canal; they secrete mucus.
Mucus lubricates the food and the inner wall of the gut, so that food slides down the intestine easily; it also protects the epithelium from digestive enzymes and acid.
Without goblet cells there would be no lubrication, and the smooth passage of food would be affected.
Somatostatin is secreted by the delta cells of the pancreas and by the hypothalamus, sebum by the sebaceous glands of the skin, and sperm maturation takes place in the epididymis.
Hence the smooth movement of food down the intestine will be adversely affected.