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Digestive Enzymes and Bile Secretion Quiz

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Digestive Enzymes and Bile Secretion Quiz

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Questions and Answers

What is the role of intrinsic factor in digestion?

Helps in the breakdown of dietary triglycerides

Aids in the absorption of vitamin B12 in the ileum (correct)

Converts lipase into its active form in the duodenum

Facilitates pepsinogen activation in the stomach

Why is pepsinogen converted to pepsin in the stomach?

To activate gastric lipase

To increase mucus production

To lower the stomach pH

To facilitate protein digestion (correct)

Which enzyme specifically targets triglycerides composed of medium- and short-chain fatty acids?

Gastric lipase (correct)

Lingual lipase

Pancreatic lipase

Bile lipase

What is the pH range of the stomach during digestion?

1-4 Signup and view all the answers

In cases of pancreatic insufficiency, what becomes apparent about lingual and gastric lipases?

They are not enough to prevent lipid malabsorption Signup and view all the answers

Which organ secretes bile that aids in emulsifying fats for better digestion?

Liver Signup and view all the answers

What stimulates the release of CCK, secretin, and GIP in response to partially digested foods?

Fats Signup and view all the answers

What is the primary function of bile salts in digestion?

Facilitating lipid digestion and absorption Signup and view all the answers

Which enzyme from the pancreas is responsible for lipid digestion?

Pancreatic lipase Signup and view all the answers

What activates trypsin and chymotrypsin in the small intestine for protein digestion?

Enterokinase Signup and view all the answers

Which molecule is predominantly found in bile along with water and small amounts of pigments and cholesterol?

Bile salts Signup and view all the answers

In addition to stimulating enzyme secretion, which hormone affects gastrointestinal motility and satiety?

CCK Signup and view all the answers

What initiates the secretion process in the digestive system?

Impulses from the vagus nerve Signup and view all the answers

Which hormone stimulates the secretion of pancreatic juice and inhibits gastric acid secretion and emptying?

Secretin Signup and view all the answers

What is the function of secretin in the digestive system?

Neutralize acidity and protect duodenal mucosa Signup and view all the answers

Which cells do gastrin bind to in order to stimulate gastric acid production?

Parietal cells and histamine-releasing cells Signup and view all the answers

What is the role of neutralized acidity in the duodenum?

Protects duodenal mucosa and supports enzyme activity Signup and view all the answers

Which hormone is involved in inhibiting gastrin release when lumen acidity increases?