CS&D 110 Chapter Notes - Chapter 11: Hypotonia, Respiratory Tract Infection, Hyoid Bone
6 Mar 2017
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Swallowing disorders increase risk of choking and may lead to aspiration of food into lungs and respiratory illnesses. Neuromotor problems and structural anomalies can interfere with feeding and swallowing. Possible outcomes: malnutrition, ill health, weight loss, fatigue, frustration, respiratory infection, aspiration, and death. Tongue forms a cupped position and hold the fluid in a liquid bolus (substance that is to be ingested) against front portion of hard palate: solid foods: Tongue and cheeks move food to teeth for chewing and mixing with. Oral phase saliva to form a solid bolus: movement of bolus from front to back of mouth, when substance reaches anterior faucial arch, pharyngeal swallow reflex is triggered. Pharyngeal phase: velum moves up to rear wall of pharynx and prevents bolus from going into nasal cavity, pharynx contracts and squeezes bolus down, hyoid rises, bringing larynx up and forward. Esophageal phase: muscles move the bolus in peristaltic contractions from top of esophagus into the stomach.
