palatoglossal arch

Each palatoglossal arch runs downwards, laterally and forwards, from the soft palate to the side of the tongue.

This muscle also prevents the spill of saliva from vestibule into the oropharynx by maintaining the palatoglossal arch.

Once the bolus reaches the palatoglossal arch of the oropharynx, the pharyngeal phase, which is reflex and involuntary, then begins.

The anterior one is known as the palatoglossal arch, and the posterior one is known as the palatopharyngeal arch.

The palatine tonsils are located in the isthmus of the fauces, between the palatoglossal arch and the palatopharyngeal arch of the soft palate.

Intra-orally, there may be swelling and erythema (redness) or the anterior tonsillar pillar (the Palatoglossal arch) and deviation of the uvula to the unaffected side.

A separate fold is called the plica triangularis which runs inferoposteriorly from the posterior surface of the palatoglossal arch to cover the inferior portion of the tonsil.

It opens anteriorly, through the isthmus faucium, into the mouth, while in its lateral wall, between the palatoglossal arch and the palatopharyngeal arch, is the palatine tonsil.

They are located on the sides at the back of the tongue, just in front of the palatoglossal arch of the fauces, There are four or five vertical folds, and their size and shape is variable.

The isthmus of the fauces or the oropharyngeal isthmus is a part of the oropharynx directly behind the mouth cavity, bounded superiorly by the soft palate, laterally by the palatoglossal arches, and inferiorly by the tongue.

The palatoglossal arch (glossopalatine arch, anterior pillar of fauces) on either side runs downward, lateral (to the side), and forward to the side of the base of the tongue, and is formed by the projection of the glossopalatine muscle with its covering mucous membrane.

The palatopharyngeal arch (pharyngopalatine arch, posterior pillar of fauces) is larger and projects farther toward the middle line than the Palatoglossal arch; it runs downward, lateralward, and backward to the side of the pharynx, and is formed by the projection of the Pharyngopalatinus, covered by mucous membrane.