Commonly confused

Secretin vs CCK

The tell

Secretin answers acid with pancreatic bicarbonate, resetting the duodenal pH. CCK answers fats and peptides with pancreatic enzymes and gallbladder bile.

Pairs like this are where exam points go missing — the concepts are fine, the labels swap. Retrieval fixes it faster than rereading: the daily quiz mixes confusable pairs into every set.

Today’s daily quiz All confusable pairs