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QUIZ: Upper Digestive System: True or False?

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Salivary amylase is released in the mouth.
The busiest place in the digestive system is the mouth.
The pancreas releases amylase.
The pancreas secretes bile for the emulsification of fats.
The gallbladder stores bile.
The liver detoxifies metabolic wastes such as alcohol.
Sphincters are muscle rings around digestive tracts.
There are two sphincters at the stomach: The cardiac and pyloric.
Peristalsis is primarily conducted by cardiac muscle.
Circular muscles contract ahead of the bolus, and longitudinal ones contract behind the bolus in peristalsis.
The active form of pepsinogen is pepsin, which digests protein.
The stomach secretes gastrin, which triggers the release of hydrochloric acid in a positive feedback loop.
Cholecystokinin (CCK) is released in the enteroendocrine cells in the small intestine.
CCK is released into the blood.
Lipase and maltase together perform lipid (fat) digestion.
Nuclease breaks down DNA.
The duodenum releases secretin, which signals to neutralize the pH of the chyme.
Glucose and galactose are absorbed through a facilitated diffusion channel.
Pancreatic cancer is one of the least severe cancers.
The small intestine is composed of the duodenum, the jejunum, and the ilium.

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