Swallowing is difficult to swallow, food through the mouth or esophagus when there is a sense of obstruction, swallowing time is longer, oft
Swallowing is difficult to swallow, food through the mouth or esophagus when there is a sense of obstruction, swallowing time is longer, often can not swallow food.
Dysphagia is mechanical dysphagia and power according to the etiology of oropharyngeal dysphagia score.
Swallowing is a complex reflex action, including swallowing reflex afferent nerve afferent nerve from the wall of the pharynx, soft palate, epiglottis and esophagus. The basic center of swallowing is located in the medulla oblongata, and the efferent nerve innervating the muscles of the tongue, pharynx and larynx is in the fifth, 9, and 12 pairs of cranial nerves.
So how is swallowing done?
Swallowing movements are generally divided into three phases:
A: from the mouth to the pharynx, is affected by cerebral cortex impulse random start, at the beginning of the tongue up to the soft palate, then the mylohyoid muscle contraction, the bolus into the soft palate after pharynx.
The two stage: from the pharynx to the upper esophagus, which is a series of rapid reflexes, esophageal stimulation receptor of the soft palate, causing a series of reflex contraction of muscles, the soft palate rises, pharyngeal protruded, closed nasal pathway, laryngeal vocal fold adduction, rising forward close to the epiglottis, pharynx and trachea closed pathway. Apnea, upper esophageal open, the bolus is forced by pharynx esophagus.
The three stage: down the esophagus to the stomach, which is achieved by the contraction of esophageal muscle sequence. That is, peristalsis, it is a forward movement of the waveform, in the lower end of the food group is a comfortable Zhang Bo, the upper end of the contraction wave, so that the food group was pushed into the stomach.