Digestive System Flashcards
What triggers the release of CCK?
Presence of proteins and fats in the duodenum.
What does CCK stimulate?
Gallbladder to release bile salts; pancreas to release digestive enzymes.
What does secretin do?
Stimulates the pancreas to release bicarbonate ions to neutralize stomach acid.
What does gastrin do?
Stimulates HCl secretion and stomach motility.
What turns pepsinogen into pepsin?
HCl
What turns trypsinogen into trypsin?
Brush border enzymes in the small intestine.
What is peristalsis?
A wave-like movement that moves food in one direction.
What is segmentation?
A mixing motion that moves chyme forward and backward.
What is the purpose of bile salts?
Emulsify fats
What do parietal cells secrete?
HCl and intrinsic factor
What do chief cells release?
Pepsinogen
What does HDL do?
Transports cholesterol from tissues to the liver.
What does LDL do?
Transports cholesterol from the liver to the tissues.
