Rehabilitation Sciences 3061A/B Lecture Notes - Hyoid Bone

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Swallowing coordination btw mouth, pharynx, larynx, and esophagus. Oral stage: y oral preparatory stage: manipulating/chewing/controlling bolus y oral propulsive stage, tongue pulls bolus back where reflex is triggered. Pharyngeal stage: y onset of reflex triggered: carries bolus through pharynx y eppiglottic deflection, false fold closure, true fold closure making sure bolus does not enter trachea. Esophageal stage: y ues (sphincter) opens, peristaltic wave carries bolus into stomach and out of danger. B tongue tip up to bony ridge, come back to pull bolus back. *no more food left in oral cavity (want everything to squeeze down no leftovers!) Dysphagia: y difficulty swallowing moving food from mouth to stomach y. Includes impairments in motor, cognitive (dementia), structural, and sensory components (autism) y results from impairment in any one or more of the stages of swallowing. Esophageal stage problems: y opening to stomach fails to open or delayed in opening: causes food pooling in laryngeal inlet.

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