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Questions and Answers
What protective reflex occurs during the pharyngeal phase of deglutition to close the glottis?
During which phase of deglutition does the tongue elevate upward and backward to push the bolus from mouth to pharynx?
Which phase of deglutition involves protective reflexes to direct food to the esophagus and protect the respiratory system?
What is the main function of the second phase of deglutition, the pharyngeal stage?
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Study Notes
Phases of Deglutition
- The glottis is closed during the pharyngeal phase of deglutition as a protective reflex.
- The tongue elevates upward and backward during the oral phase to push the bolus from the mouth to the pharynx.
- The pharyngeal phase of deglutition involves protective reflexes to direct food to the esophagus and protect the respiratory system.
- The main function of the pharyngeal stage (second phase of deglutition) is to ensure the safe passage of food into the esophagus.
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Description
Test your knowledge about the physiological phases of deglutition (swallowing), including the voluntary buccal phase and the pharyngeal phase. Learn about the process of transporting food or fluid from the mouth to the stomach through the pharynx and esophagus.
