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Anatomy 5
AG Swallowing
Question | Answer |
---|---|
traditional view of how a swallow is triggered and "What is a swallow?" | anterior faucial arch stimulation characterized by four stages: oral prep, oral, pharyngeal, esophageal; also, considered a brainstem-controlled reflex |
current view of how a swallow is triggered and "What is a swallow?" | stimulation of deep muscle receptors in base of tongue and superficial mucosal receptors in pharynx; complex series of interdependent & overlapping movements carrying material from oral cavity to pharynx and esophagus; considered a modifiable response |
3 step process for when things get past the TVFs | TRAP, COUGH, CLEAR |
the walls of the trachea that are lined with cilia and mucous | The Mucociliary chain |
Horking clears what? | oropharynx |
Throat clearing clears what? | larynx and hypopharynx |
coughing, forced expiration clears what? | lungs, trachea, and larynx |
respiratory/swallowing typical pattern | inhale - begin exhalation - hold breath - swallow - continue exhalation |
the entire process of putting food in the mouth until it enters the stomach | deglutition |
a delay in, or misdirection of, a fluid or solid food bolus as it moves from the mouth to the stomach | dysphagia |
The biological function of swallowing | to safely transport food from the mouth to the stomach |
valves involved in swallowing | velopharyngeal, TVFs, ventricular folds, epiglottis/aryepiglottal fold over. |
What is the prime mover of material through the pharynx | Tongue base retraction |
What cannot be changed about a swallow? | pharyngeal peristalsis, PES relaxation |
What can be changed about a swallow? | vocal fold closure and laryngeal elevation |