Multiple Choice
The gastroesophageal sphincter is normally closed to prevent
A) air from entering the esophagus during breathing
B) gastric contents from refluxing into the esophagus
C) vomiting
D) esophageal leaking into the stomach
E) food from entering the pharynx
Correct Answer:
Verified
Correct Answer:
Verified
Q16: Pepsin formation in the stomach is autocatalytic.
Q17: _ do(es) not directly enter the blood
Q18: Intrinsic factor is<br>A)secreted by the parietal cells
Q19: Identify the correct statement(s) about digestive enzymes
Q20: Indicate which digestive secretion is being described
Q22: During defecation, the internal anal sphincter relaxes.
Q23: The defecation reflex<br>A)is initiated when mass movements
Q24: The four basic digestive processes are _,
Q25: Most of the digestive secretions do not
Q26: Blood flow into the liver is via