Question

Which of the following events does not occur during the pharyngeal phase of deglutition?

The medulla oblongata sends a message to smooth muscles in the esophagus to contract
Rectus series muscles in the neck contract to close off the larynx opening
Genioglossus, styloglossus, and hyoglossus contract to push food toward the pharynx
Pharyngeal constrictor muscles contract to move food stuff toward the esophagus

Answer 1

The event that does not occur during the pharyngeal phase of deglutition is: The medulla oblongata sends a message to smooth muscles in the esophagus to contract.