-
untreated gastroesophageal reflux increases the risk for the more serious condition known as
barrett's esophagus
-
after someone chews and swallows a portion of food, what becomes of the salivary amylase in the stomach
is it inactivated by gastric juice
-
what is the lumen of the GI tract
the inner space
-
what is intestinal ischemia
reduced blood flow to the intestines
-
which of the following is a feature of the lymphatic system
it carries fats away from the intestines
-
a person on a low fiber diet is at increased risk for experiencing elevated rectal vein pressure leading to formation of
hemorrhoids
-
which of the following is a feature of the taste buds
they react only with particles in solution
-
exchange of oxygen, nutrients, and waste material takes place across the walls of small vessels called
capillaries
-
during the process of digestion, at what point does the stomach begin to release chyme
when the chyme is liquefied
-
which of the following is a feature of the muscular actions of digestion
segmentation in the intestines allows periodic squeezing along its length, resulting in momentary reversal of the movement of intestinal contents
-
an example of an important function of the colon would be its absorption of
salts
-
which part of the GI tract contains highly acidic digestive juices
stomach
-
when alcohol and barbiturates are ingested, they are absorbed from the GI tract and transported first to the
liver
-
Which of the following is NOT an important issue in the treatment or management of existing ulcers
gastric acid release should be suppressed
-
into what region of the intestinal tract does the stomach empty
duodenum
-
over the counter antacids are best used to treat
occasional acid indigestion
-
after the pancreatic juices have mixed with chyme in the small intestine, which of the following describes the pH of the resulting mixture
approximately neutral
-
Why is there little to no digestion of starch in the stomach
salivary enzymes do not work in an acid environment.
-
which of the following is NOT among the functions of cholescystokinin?
triggering release of gastrin
-
what are the primary target organs for the action of cholecystokinin
gallbladder and pancreas
-
a peptic ulcer resides in the
stomach or duodenum only
-
which of the following is a description of chyme
a semiliquid mass of partially digested food released by the stomach into the small intestine.
-
which of the following substances functions to control the release of hydrochloric acid to prevent excessive acidity
gastrin
-
which of the following is NOT a component of pancreatic juice
bile
-
Jim went for his annual check-up and was diagnosed with heartburn. which of the following actions is most likely causing jim's condition
defective lower esophageal sphincter activity
-
which of the following is a feature of peristalsis
it consists of wavelike muscular contractions resulting from alternate tightening and relaxing of circular muscles and longitudinal muscles.
-
jenny has just undergone a cholecystectomy. after recover, jenny will no longer
have an extra reservoir for bile
-
microorganisms in food that are viable when consumed and that are beneficial to health are known as
probiotics
-
which is a characteristic of pancreatic digestive enzyme function
the pancreas can increase the activity of fat-degrading enzymes in response to more fat in the diet.
-
which is NOT considered one of the basic taste sensations
HOt
-
A person with chronic GI bleeding is at risk for deficiency of
iron
-
surface area is also an integral part of the absorption of nutrients
through the presence of the enormous number of villi and microvilli
-
which of the following is a feature of IBS
effective treatment includes peppermint oil
-
the process by which food is broken down into absorbable components is called
digestion
-
what is an important function of mucus
protects the stomach walls from digestion
-
a bolus is conducted past the diaphragm through the
esophagus
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