Why are adults more prone to choking compared to non-human primates?

Adults are more prone to choking compared to non-human primates primarily because the larynx is situated lower in humans. This anatomical difference affects the positioning of the airway and esophagus, contributing to the risk of food or other objects entering the airway rather than the esophagus during swallowing.

In humans, the positioning of the larynx allows for a more complex vocal tract, which facilitates speech but also creates a narrower passage for swallowing. When combined with the development of the throat and the act of swallowing in an upright position, the lower larynx can increase the likelihood of airway obstruction, particularly with larger food particles.

Non-human primates, on the other hand, typically have a higher laryngeal position that allows for a more direct connection between the mouth and esophagus, reducing the chance of choking during consumption of food. Their anatomical configuration aids in more efficient swallowing mechanics, making them less susceptible to airway obstruction events in comparison to adults.