What prevents acid from backing up into the esophagus from the stomach?
A) Pyloric sphincter
B) Lower esophageal sphincter
C) Rugae
D) Adventitia
Correct Answer:
Verified
Q21: What digestive function occurs in the esophagus?
A)Begin
Q22: Which layer of the digestive tract wall
Q23: Which gastric gland cell type secretes HCl?
A)Chief
B)Mucus
C)Parietal
D)Enteroendocrine
Q24: Gastric glands
A)line the esophagus.
B)secrete juice containing HCl.
C)secrete
Q25: Carbohydrates are first chemically digested in the
A)stomach.
B)duodenum.
C)mouth.
D)large
Q27: Ingested carbohydrates are first chemically digested by
A)pancreatic
Q28: The serous membrane of the abdominal cavity
Q29: Lack of intrinsic factor leads to
A)heartburn.
B)pernicious anemia.
C)gastric
Q30: How many layers of smooth muscle are
Q31: Which type of gastric gland cell secretes
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