Hormones & Digestion Regulation Quiz - Video

What stimulates G cells to secrete gastrin?

• Decrease in enzyme availability

• Presence of food in the stomach

• Decrease in stomach motility

• Decrease in stomach pH

What is the primary function of gastrin in the stomach?

• To neutralize acids

• To decrease the pH

• To increase the pH

• To regulate the pH

What triggers the release of secretin and CCK in the duodenum?

• High pH levels

• Presence of carbohydrates, fats, and proteins

• Absence of food

• High enzyme activity

How does cholecystokinin (CCK) affect the stomach's smooth muscle?

• It increases enzyme production.

• It stimulates contraction.

• It has no effect.

• It inhibits contraction.

Which hormone acts on the pancreas to produce proteases and amylases?

• Insulin

• CCK

• Secretin

• Gastrin

What role does bicarbonate play in the duodenum?

• It digests proteins

• It increases pH

• It acts as an enzyme

• It decreases pH

What is the function of bile salts in fat digestion?

• They digest carbohydrates.

• They emulsify fats.

• They increase pH.

• They act as enzymes.

Which hormone is a growth factor for mucosal cells of the stomach?

• Secretin

• Gastrin

• CCK

• Insulin

How are gastrin and CCK linked to cancer?

• They decrease cell growth.

• They have no link to cancer.

• They reduce enzyme production.

• They can induce growth of cancerous tissues.

What is the effect of secretin on the heart?

• It decreases heart rate.

• It has no effect.

• It increases heart rate.

• It regulates contractility.