Which of the following is false about secretions from the salivary glands?
A) are mostly water
B) help control bacterial populations in the mouth
C) help lubricate the oral cavity and its contents
D) contain enzymes for the digestion of carbohydrates
E) contain enzymes for the digestion of lipids
Answer: E
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The primary kind of motility in the stomach during digestion of a meal is
A. regurgitation. B. segmentation. C. peristalsis. D. relaxation of the pyloric sphincter. E. mass movement.
How many chromosomes do human somatic cells contain?
a. 48 b. 46 c. 32 d. 24 e. 23
Which test tubes were used to determine the optimal pH for pepsin activity?
A) tubes 2, 3, and 4 B) tubes 2, 5, and 6 C) tubes 4, 5, and 6 D) tubes 1, 2, and 3
In order to remove a tumor in the muscular tunic of the stomach, a surgeon must cut through the
A. lamina propria. B. submucosa. C. serosa. D. mucosa. E. lamina propria.