Lecture 49- Digestive System Poll Questions Flashcards
After not eating for 4 hours, you see the waiter bring out your favorite food. This would result in an increase in the secretions of all the following EXCEPT:
alkaline mucus
salivary protease
ghrelin
lysozymes
salivary protease
Does not exist
As a bolus of food enters the stomach and causes it to distend (stretch), which of the following secretions would decrease:
mucus
HCl
ghrelin
gastrin
ghrelin
hunger hormone- decreases because food arrives in the stomach
Due to a mutation, John’s gastric cells don’t release much acid. How would his condition affect the intestinal phase of digestion?
-decreased secretion of CCK
-decreased secretion of GIP
-decreased secretion of secretin
-decreased secretion of mucus
decreased secretion of secretin
Low pH=secretin
During swallowing the ______ prevent food from entering the trachea.
tongue
uvula
epiglottis
soft palate
epiglottis
Mastication will enhance enzymatic action by increasing the ______ of the ingested food.
volume
volume to surface area ratio
surface area to volume ratio
density
surface area to volume ratio
effective enzyme digestion
Which of the following is a consequence of chronic purging?
decreased gastric motility
tooth decay
gastric ulcers
acid reflux
tooth decay
The rate of gastric emptying will be delayed by:
increased gastric pressure
a salty meal
a low-fat meal
a low-fiber meal
a salty meal
Which of the various secretions in the stomach convert pepsinogen into pepsin?
ghrelin
HCl
gastrin
intrinsic factor
HCl
A mutation that decreases the release of CCK will most likely result in impaired _________.
fat breakdown
insulin secretion
neutralization of acidic chyme
protein synthesis
fat breakdown
Eating a high fiber diet will NOT help prevent which of the following?
constipation
diarrhea
diverticulosis
hemorrhoids
diarrhea
You are driving on the highway and narrowly miss hitting a deer. Which of the following processes would most likely occur because of the encounter?
increased gastric motility
increased sweat production
increased anabolic reactions
increased saliva production
increased sweat production
After doing very well on the BMS final exam, you enjoy a delicious meal. Which process is most likely to occur as you eat?
-salivary amylase breaks down triglycerides in mouth
-bronchial tubes constrict to cause faster airflow
-secretions by accessory organs are inhibited
-the delicious aroma causes activation of vagus nerve
the delicious aroma causes activation of vagus nerve
One of the consequences of celiac disease is ______ because colonic bacteria break down the sugars that were not digested and absorbed in the small intestines.
bleeding
constipation
floating stools and feeling bloated
impaired peristalsis
floating stools and feeling bloated
Which of the following is a disaccharide?
frutose
sucrase
maltose
lactose
more than one
more than one (maltose/lactose)
Chylomicrons are produced in the _____.
epithelial cells of the small intestines
liver
muscles
adipose
tissue
epithelial cells of the small intestines
