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Andrew Conway Ivy

In 1928, Ivy and Oldberg discovered that intestinal extracts prepared after instilling weak acid or fats into the proximal duodenum, elicited gallbladder contraction in dogs, cats, and guinea pigs. Based on this biological property, the hormone was named cholecystokinin (CCK). In addition to gallbladder contraction, CCK was later shown to stimulate pancreatic secretion and to delay gastric emptying by its effect on the lower esophageal sphincter. CCK was the first hormone shown to influence satiety and cause reduction in food intake 

Andrew Ivy = I Cells Of Duodenum = CCK

IVY = I= CCK 

Actions Of Cholecystokinin

Integrated Activity Of Cholecystokinin

CCK On Pancreatic Secretions

CCK Acting On Pancreatic Acinar Cells

Digestion Of Carbohydrates, Proteins and Fats

CCK On Gall Bladder: Increased Release Of Bile

Bile = Digestion Of Fats

CCK For Digestion Of Carbohydrates/Proteins/Fats 

Snapshot