Palatoglossus muscle

Palatoglossus muscle is a small fleshy fasciculus, narrower in the middle than at either end, forming, with the mucous membrane covering its surface, the Glossopalatine arch.

Etymology

The term "Palatoglossus" is derived from the Latin words "palatum" meaning "roof of the mouth" and "glossus" meaning "tongue". This is indicative of the muscle's location and its connection between the palate and the tongue.

Anatomy

The Palatoglossus muscle arises from the palatine aponeurosis, and passing downward, forward, and lateralward in front of the palatine tonsil, it becomes broader and thinner and is inserted into the side of the tongue, some of its fibers spreading over the dorsum, and others passing deeply into the substance of the organ.

Function

The Palatoglossus muscle elevates the back part of the tongue, and draws the soft palate downward, thereby narrowing the oropharyngeal isthmus. It also aids in swallowing and speech.

Clinical significance

Damage to the Palatoglossus muscle can result in difficulty swallowing, known as dysphagia, and can also affect speech.

Related terms

• Glossopalatine arch
• Palatine aponeurosis
• Palatine tonsil
• Dorsum tongue
• Soft palate
• Oropharyngeal isthmus
• Dysphagia

See also

• Muscles of the human body
• Muscles of the head and neck

Palatoglossus muscle

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