A key objective in this chapter is to identify the major enzymes in the digestion of carbohydrates, proteins, and fats as well as the organs that secrete them. This activity requires you to match the enzyme with the secreting organ. Drag the names of the enzymes to their respective bins, representing the appropriate secreting organ. Some organs secrete more than one enzyme.

Gastrin: stomach, CCK - SI, Insulin - pancreas, Glucagon-pancreas. etc

Explanation:

1. Gastrin: secreted by stomach stimulating activity of the stomach,

2. CCK: secreted by SI stimulating secretion of pancreatic enzymes; contraction of gallbladder and pyloric sphincter and inhibitory effects on stomach

3. Secretin: secreted by SI if material entering SI is acidic, triggering secretion of HCO₃-

.

4. Insulin: produced by beta-cells of pancreas and

stimulates storage of glucose in liver and muscle and it causes re-uptake of glucose when blood-sugar is high, lowering blood sugar

5. Glucagon - produced by alpha-cells of pancreas and

it stimulates release of glucose from liver when blood-sugar is low, and results in raising blood sugar.