In order to prevent self-digestion of the pancreas, activation of pancreatic proteases occurs in the __________.
duodenum
Some aspects of the __________ phase of gastric secretion, which occur before food enters the stomach, may be considered conditioned reflexes.
cephalic
What would be the effect of stripping the small intestines of their villi?
decreased surface area for absorption
Which regulatory chemical stimulates gastric gland activity and motility?
gastrin
The major site for nutrient absorption is the __________.
small intestine
Many of the early food allergies seen in infants are caused by __________.
absorption of whole proteins
The only stomach function that is essential to life is __________.
the secretion of intrinsic factor
What cells produce pepsinogen?
chief cells
What substances from different organs would mix together at the hepatopancreatic ampulla?
bile and pancreatic enzymes
__________ circulation collects nutrient-rich blood from the GI tract and delivers it to the liver.
Hepatic portal
During deglutition, the bolus passes into the stomach from the esophagus through the __________.
gastroesophageal sphincter
What cells produce HCl?
parietal cells
What intestinal structure(s) consist(s) of protective aggregated nodules of lymphocytes and macrophages?
Peyer's patches
The final product of carbohydrate digestion is __________.
monosaccharides
Which sequence below represents the correct order of the tunics of the GI tract, starting from the layer adjacent to the lumen and moving superficially?
mucosa, submucosa, muscularis externa, serosa
The digestive system in a cadaver is longer than in a living person because, in a cadaver, there is NO __________.
muscle tone
During the intestinal phase of gastric regulation, __________.
the stomach is initially stimulated and later inhibited
The myenteric nerve plexus is located in which tunic of the alimentary canal?
muscularis externa
The short reflexes in the digestive system are stimulated by __________.
the enteric nerve plexuses
Emulsification of which organic molecules would be most affected if the liver were severely damaged?
lipids
Your experience on this site will be improved by allowing cookies.