18 Questions
What is the role of intrinsic factor in digestion?
Aids in the absorption of vitamin B12 in the ileum
Why is pepsinogen converted to pepsin in the stomach?
To facilitate protein digestion
Which enzyme specifically targets triglycerides composed of medium- and short-chain fatty acids?
Gastric lipase
What is the pH range of the stomach during digestion?
1-4
In cases of pancreatic insufficiency, what becomes apparent about lingual and gastric lipases?
They are not enough to prevent lipid malabsorption
Which organ secretes bile that aids in emulsifying fats for better digestion?
Liver
What stimulates the release of CCK, secretin, and GIP in response to partially digested foods?
Fats
What is the primary function of bile salts in digestion?
Facilitating lipid digestion and absorption
Which enzyme from the pancreas is responsible for lipid digestion?
Pancreatic lipase
What activates trypsin and chymotrypsin in the small intestine for protein digestion?
Enterokinase
Which molecule is predominantly found in bile along with water and small amounts of pigments and cholesterol?
Bile salts
In addition to stimulating enzyme secretion, which hormone affects gastrointestinal motility and satiety?
CCK
What initiates the secretion process in the digestive system?
Impulses from the vagus nerve
Which hormone stimulates the secretion of pancreatic juice and inhibits gastric acid secretion and emptying?
Secretin
What is the function of secretin in the digestive system?
Neutralize acidity and protect duodenal mucosa
Which cells do gastrin bind to in order to stimulate gastric acid production?
Parietal cells and histamine-releasing cells
What is the role of neutralized acidity in the duodenum?
Protects duodenal mucosa and supports enzyme activity
Which hormone is involved in inhibiting gastrin release when lumen acidity increases?
Secretin
Test your knowledge on digestive enzymes, bile secretion, and the role of CCK, secretin, GIP in the digestive process. Explore how bile salts aid in the digestion and absorption of lipids, cholesterol, and fats.
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