Which of the following statements is true?

Question

Quizplus · Accepted Answer

Heartburn is caused when stomach acid moves up into the esophagus due to the failure of the gastroesophageal sphincter to close properly. The statement in option B is false as chyme contains enzymes that break down food, and can damage the lining of the digestive tract. Option C is also false as stomach acid (not HCl) partially digests proteins, while fats are broken down by bile secreted by the liver and stored in the gallbladder. Option D is false as cystic fibrosis is a genetic disorder that affects the respiratory and digestive systems, and does not cause malfunction of the muscles that control swallowing.

Which of the Following Statements Is True