Uploa
1.
Secretions released into the gastrointestinal
tract include
from the parotid glands,
from the chief cells in the gastric
glands and
from the liver.
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Answer:
The stomach is lined by a mucous membrane that contains glands (with chief cells) that secrete gastric juices. Two smooth muscle valves, or sphincters, keep the contents of the stomach contained: the cardiac or esophageal sphincter and the pyloric sphincter.
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