Dysphagia Swallowing Disorder. Presented by: Angie Dubis Bohn Compiled by: Nehal Kothari. Anatomy of Normal Swallow. Oral structures: Lips: Swallowing begins as soon as food is put in mouth. Help in stripping food off the spoon and retaining bolus in mouth.
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Angie Dubis Bohn
Compiled by: Nehal Kothari
Anterior loss of bolus. Loss of food. Difficulty in holding the bolus in mouth.
Difficulty with process of mastication and bolus transit. Residue may remain in oral cavity. Pre mature spill over may occur too.
Difficulty with retaining food in the mouth. May result in pocketing of food on the weak side.
Food is not felt in the mouth and may be lost earlier in the oral cavity and aspirated before swallow.
May affect the adult rotary chewing pattern.
Laryngeal muscles may not be strong enough to move up and down. Epiglottis does not completely fall down. Material enters the airway. May result in choking or coughing Aspiration.
A represents food bolus and B indicates marked presence of upper air in the esophagus inferior to food bolus.
Recap of Stages of Swallowing
Initial stages of eating and swallowing under voluntary control. This means that it is governed by the brain.
Once food enters the mouth the teeth break it down into smaller and smaller pieces. This has the dual function of making the food easier to swallow and increasing the surface area of food on which the saliva can act.
The tongue, lips and cheeks assist the teeth in the process by allowing the food to be "rolled" around the oral cavity.
The mechanical action described above produces a softened bolus of food which is now ready to be swallowed. The correct biological term for swallowing is deglutition.
The picture shows the voluntary stage of deglutition. Here the bolus is pushed into the upper part of the pharynx (known as the oropharynx) by the action of the tongue.
The pharyngeal stage of deglutiton is stimulated when the bolus enters the oropharynx. This stage of swallowing is mainly due to a reflex response.