4. If a person suffered from chronic heartburn and acid reflux, what muscle/sphincter might not be functioning properly? (15 points)

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

you should seek treatment when you are seriously thinking of sui.cide, and that can eventually lead to your own death.

lifetime activities are certain actions that are either required throughout your life or you choose to do them. for example, eating is considered a lifetime activity, drinking water or other beverages, keeping your body clean, taking medicine. those types of actions are considered lifetime activities.