Which of the following is a sign of abnormal swallowing physiology?

Choking during eating is a clear indication of abnormal swallowing physiology. When an individual chokes, it typically suggests that food or liquid has entered the airway instead of the esophagus, which can result from various swallowing difficulties. This may point to issues such as inadequate coordination of the swallowing reflex, weakness in the muscles involved in swallowing, or obstruction in the throat or esophagus.

In a healthy swallowing process, the coordination and strength of the swallowing muscles allow for safe and effective transport of food and liquids from the mouth to the stomach. Choking demonstrates a breakdown in this process and raises significant concerns regarding the safety of oral intake, potentially leading to more severe complications like aspiration pneumonia if not addressed.

The other options reflect normal physiological processes: efficient mastication indicates good chewing ability, consuming liquids smoothly suggests proper swallowing mechanics, and swallowing without effort shows a healthy swallow function. These do not signal any dysfunction, making choking the only choice that signifies a problem in swallowing physiology.