What nerve is the palatoglossus innervated by?
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What nerve is the palatoglossus innervated by?
vagus nerve
This is the reason that all the other tongue muscles receive innervation from the twelfth cranial nerve (hypoglossal nerve) except the palatoglossus muscle, which is innervated by the tenth cranial nerve (vagus nerve).
What is the innervation of the palatoglossus muscle?
Innervation. Palatoglossus is the only muscle of the tongue that is not innervated by the hypoglossal nerve (CN XII). It is innervated by the pharyngeal branch of the vagus nerve (CN X).
What is the function of the palatoglossus muscle?
The Palatoglossus Muscle’s Function The palatoglossus functions to elevate the back portions of the tongue. Additionally, this muscle functions to pull the soft palate down toward the tongue which narrows the oropharyngeal isthmus. The oropharyngeal isthmus is the opening at the back of the oral cavity.
What is palatopharyngeus innervated by?
Palatopharyngeus muscle is innervated by branches of pharyngeal plexus, which in turn receives input from the vagus nerve (CN X).
What Innervates tensor veli palatini?
The tensor veli palatini muscle is innervated by the mandibular branch of the trigeminal nerve, and the other three are all innervated by the pharyngeal branch of the vagus nerve.
What is the palatoglossus connected to?
The palatoglossus originates from the inferior surface of the palatine aponeurosis, which is a thin membrane that is connected to the back portion of the hard palate. The palatine aponeurosis supports the soft palate and other muscles of the roof of the mouth.
What cranial nerve Innervates the palatopharyngeus?
Two major anatomical textbooks mention that both palatopharyngeus muscle (PP) and the levator veli palatini muscle (LVP) are innervated by the cranial part of the accessory nerve (CN XI) via the pharyngeal plexus and the tensor veli palatini muscle (TVP) is innervated by the mandibular nerve [7, 8].
Why does palatoglossus innervate vagus?
The palatoglossus is the only tongue muscle supplied by the vagus nerve; the remaining muscles are supplied by cranial nerve XII. The palatoglossus muscle originates in the soft palate and passes through the tongue in a transverse fashion. Together with the styloglossus muscle, it acts to elevate the posterior tongue.
What Innervates the tensor veli palatini?
What nerve Innervates tensor tympani?
The tensor tympani is innervated by a branch of the fifth cranial nerve, whereas the stapedius is innervated by a branch of the seventh cranial nerve. The muscles receive a dense innervation from motor neurons.
What is the Palatoglossus?
The palatoglossus muscle is one of the four extrinsic muscles of the tongue. The paired muscles create ridges of mucous membrane in the lateral pharyngeal wall called the palatoglossal arches (also known as the anterior pillars of the fauces).
What nerve Innervates the styloglossus?
hypoglossal nerve
The styloglossus muscle is innervated by the hypoglossal nerve (CN XII). The hyoglossus muscle depresses and retracts the tongue and is innervated by the hypoglossal nerve (CN XII).
What nerve goes between Palatoglossus and palatopharyngeus?
Contraction of both the palatinus and palatopharyngeus muscles shortens the soft palate and depresses the caudal portion toward the tongue. Both the palatinus and palatopharyngeus muscles receive efferent motor innervation from the pharyngeal branch of the vagus nerve.
