Deglutition

Match the following for swallowing reflex:

• Afferent fibers

• Pressure receptors

• Centre

• CN X

• Receptors

• Nucleus solitarius

• Effector

• Pharyngeal, laryngeal muscles.

• Efferent fibers

• CN IX

Reorder the following stages of deglutition:

• Oral phase

• Pharyngeal phase

• Esophageal phase

State the phase.

• Oral/buccal phase

• Pharyngeal phase

• Esophageal phase

State the name of the phase

• Buccal phase

• Pharyngeal phase

• Esophageal phase

State the name of the phase.

• Buccal phase

• Pharyngeal phase

• Esophageal phase

Regarding buccal phase of deglutition:

• Contraction of pharyngeal muscles

• Begins when bolus compressed the hard palate

• Elevation of larynx

• Retracted tongue forces the bolus into oropharynx

• Opening of upper esophageal sphincter

Regarding pharyngeal phase of deglutition:

• Contraction of pharyngeal muscles

• Begins when bolus compressed the hard palate

• Elevation of larynx

• Retracted tongue forces the bolus into oropharynx

• Opening of upper esophageal sphincter