For enzymes secreted into the intestinal tract to work best, the environment of the bowel needs to:
a. be acidic.
b. be alkaline.
c. secrete mucus.
d. have motility.
Q. 2A mechanism of the body to protect against some food poisoning caused by bacteria is:
a. segmentation.
b. gastric refluxing.
c. high acidity of gastric secretions.
d. mucus secreted to protect gastric lining.
Q. 3Organs that contribute digestive enzymes include:
a. ileum, jejunem, and spleen.
b. stomach, pancreas, and colon.
c. esophagus, stomach, and duodenum.
d. salivary glands, small intestine, and liver.
Q. 4The lower esophageal sphincter is responsible for:
a. allowing chyme to enter the stomach.
b. preventing gastric contents refluxing into the esophagus.
c. adding digestive juices to the bolus of food as it descends the esophagus.
d. allowing intermittent amounts of stomach contents to enter the duodenum.
Q. 5When eating, a person is protected from food entering the airway primarily by:
a. closing of the epiglottis.
b. relaxing muscles in the pharynx.
c. extending neck when swallowing.
d. muscles of cheeks form food into a bolus.
Q. 6Which of the following foods would be safest for consumption by a person with an inadequate immune system?
a. honey
b. cookie dough
c. scrambled eggs
d. Caesar salad dressing
Q. 7To prevent foodborne illnesses, it is most important to thoroughly wash surfaces after contact with which of the following?
a. mayonnaise
b. tuna (canned)
c. processed meat, such as bologna and weiners
d. utensils used in preparing chicken for baking
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