Answer:
the esophageal sphincter
Explanation:
This muscle opens and lets food and liquid enter the stomach and closes to prevent the food and liquid from leaking back into the esophagus, however if it is not working properly it could open and close at the wrong times
30 I think I'm not really sure tell me if it's right or not
<span>C. Check the active ingredients in the two medications to see if they differ. As required by the FDA, generic drugs are required to have the same active ingredients. If the generic has the same active ingredients as the name brand then it is safe to assume it is an alternative to the name brand. Generics are often taken as a cheaper alternative to the brand-name drugs while still providing the same benefits as mandated by the FDA.</span>
