The upper gastrointestinal system includes the structures from the mouth through the ________.
A. colon
B. large intestine
C. small intestine
D. stomach
Answer:D
The upper gastrointestinal system includes the structures from the mouth through the ________.
A. colon B. large intestine C. small intestine D. stomach
Explanation: A) The colon is not part of the upper gastrointestinal system.