14 Questions
What is the function of the palatopharyngeal folds during deglutition?
Trigger afferent impulses during the pharyngeal stage
What is the main function of the epiglottis during swallowing?
Prevent food from entering the trachea
What is the main characteristic of deglutition apnoea?
Temporary cessation of breathing during swallowing
Which stage of deglutition involves the palato-glossal and pharyngeal folds?
Pharyngeal stage
Which cranial nerve is responsible for triggering afferent impulses during deglutition?
Vagus (CN X)
In which part of the brain is the center for deglutition located?
Medulla
During swallowing, what causes the closure of the posterior nares?
Movement of palatopharyngeal folds
Which structure forms a hood over the larynx during the pharyngeal stage of swallowing?
Epiglottis
What is the purpose of deglutition apnoea during swallowing?
Preventing breathing while swallowing
Which response best describes the pharyngeal stage of swallowing?
Opening of upper esophageal sphincter
What prevents reflux of bolus into the pharynx during the oesophageal stage?
Lower esophageal sphincter contraction
What neurotransmitter causes relaxation in front of a bolus during peristalsis?
Nitric oxide & VIP
What condition is characterized by increased LES tone and incomplete relaxation upon swallowing?
Achalasia
"Fundoplication" is a surgical procedure used to treat which condition?
Gastroesophageal reflux disease
Learn about the anatomy involved in the process of swallowing, including the movement of the soft palate, palatopharyngeal folds, vocal cords, and epiglottis. Understand how these structures work together during the pharyngeal stage of swallowing.
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