Question

Match the swallowing phase with its description.

1. Bolus passes involuntarily from the esophagus to the stomach.

2. Bolus passes involuntarily from the pharynx to the esophagus.

3. Occurs after ingestion; chewing forms a bolus.

-Esophageal phase

-Voluntary phase

-Pharyngeal phase

Answer 1

The voluntary phase involves moving the bolus from the oral cavity to the oropharynx. The pharyngeal phase moves the bolus from the pharynx to the esophagus. The esophageal phase starts when the bolus enters the esophagus and is propelled towards the stomach.

Step-by-step explanation:

The voluntary phase of swallowing is known as the oral or buccal phase, where the tongue moves the bolus from the oral cavity to the oropharynx. This is followed by the pharyngeal phase, in which the bolus is moved from the pharynx to the esophagus. Lastly, the esophageal phase begins when the bolus enters the esophagus and peristalsis pushes it towards the stomach.