Hyperpharyngeal reflex

Pharyngeal reflex refers to touching the posterior wall of the pharynx with a tongue depressor, which causes nausea reflex (pharyngeal muscle contraction) when normal. The reflex center is in the medulla oblongata, and those with nerve damage are dull or disappear. Pharyngeal reflex is a physiological reaction that prevents swallowing foreign bodies. When you put a toothbrush in your mouth and brush your teeth, you can also involuntarily "rett", which is caused by pharyngeal reflex. Pharyngeal reflex is a clinical manifestation of pseudobulbar palsy. Ball palsy is bulbar palsy. Because the medulla oblongata is also called the bulbar medulla, it is called bulbar palsy and also called true bulbar palsy. There are two translations of the medulla oblongata: medulla oblongata and bulb, and bulb has the meaning of ball and spheroid. Therefore, the medulla oblongata is called "ball", and medulla paralysis becomes "ball paralysis". The motor nerve nucleus in the medulla oblongata, or the cranial nerve (including the pharyngeal nerve, vagus nerve, and hypoglossal nerve) from the medulla oblongata, will cause a group of symptoms. The main manifestations are drinking water, eating cough, difficulty swallowing, hoarseness or aphasia. Therefore, those who directly damage the medulla oblongata or related cranial nerves are called true bulbar palsy. The disease is in the pontine or above the pontine, causing the motor nerve nucleus in the medulla to lose the innervation of the upper part, and the bulbar palsy that occurs is called pseudobulbar palsy. Pseudobulbar palsy is caused by bilateral upper motor neuron damage (mainly the motor cortex and its cortical brain stem bundles) causing the medullary motor cranial nucleus-the suspected nucleus and the pontine trigeminal motor nucleus-to lose upper motion Neuronal dominance is caused by central paralysis. The clinical manifestations are central paralysis of the tongue, soft palate, throat, face, and chewing muscles. The symptoms are similar to those of bulbar paralysis, but they are not caused by the medulla oblongata, so they are named Pseudobulbar palsy.

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