What Innervates the Salpingopharyngeus muscle?
The salpingopharyngeus is innervated by the vagus nerve (CN X) via the pharyngeal plexus.
What is Palatopharyngeus innervated by?
The palatopharyngeus is innervated by the pharyngeal plexus derived from the accessory and vagus nerves. The palatopharyngeus predominantly consists of fast twitch (Type II) fibers, allowing quick contraction of the muscle but potentially making it more susceptible to fatigue if required to contract for prolonged …
What is the origin of Salpingopharyngeus muscle?
|Origin||lower part of the cartilage of the auditory tube|
|Insertion||fibers pass downward and blend with the palatopharyngeus muscle to the upper border thyroid cartilage, blending with constrictor fibers|
|Artery||ascending pharyngeal artery|
|Nerve||vagus nerve (CN X)|
What is the significance of the torus tubarius?
The chief surgical pitfalls to avoid during adenoidectomy are trauma to the torus tubarius, which protects the opening of the Eustachian tube, and deep removal of the posterior wall of the nasopharynx, which leads to excessive bleeding.
What cranial nerve Innervates the Cricopharyngeus?
Cricopharyngeus The CP receives innervation from the pharyngeal plexus, which is supplied by three major nerves: vagus nerve branches including the pharyngeal branch of the vagus nerve [also referred to as the pharyngoesophageal nerve (PEN), superior laryngeal nerve (SLN), and recurrent laryngeal nerve (RLN)]; the …
What nerve innervates the superior pharyngeal constrictor?
Innervation. Superior pharyngeal constrictor receives innervation from the pharyngeal branch of vagus nerve, via the pharyngeal plexus.
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].
Does facial nerve innervate soft palate?
The taste buds of the soft palate are innervated by the greater petrosal nerve, a branch of the facial nerve (CN VII).
Why stylopharyngeus is supplied by Glossopharyngeal nerve?
As stated above, the glossopharyngeal nerve provides motor innervation to the stylopharyngeus muscle, which is responsible for elevating the pharynx and larynx.
What is Salpingopalatine fold?
A vertical fold of mucous membrane, the salpingopharyngeal fold, stretches from the lower part of the torus; it contains the Salpingopharyngeus muscle. A second and smaller fold, the salpingopalatine fold,stretches from the upper part of the torus to the palate.
Where is Salpingopharyngeal located?
The salpingopharyngeus is a muscle of the head and neck, and one of the inner longitudinal muscles of the pharynx. The paired slender muscles create vertical ridges of mucous membrane in the posterior pharyngeal wall descending from the medial ends of the Eustachian tubes to the called the salpingopharyngeal folds.
What nerve Innervates inferior constrictor muscle?
the vagus nerve
The inferior pharyngeal constrictor muscle is supplied by branches from the pharyngeal plexus, and the recurrent laryngeal nerve. These come from the vagus nerve (CN X).
What Innervates upper esophageal sphincter?
UES is innervated by the glossopharyngeal, branches of vagus, ansa cervicalis, and sympathetic nerves (from cervical ganglion). The vagus nerve, through its pharyngeal, superior laryngeal and recurrent laryngeal nerve branches, is the major motor nerve of the UES.
Which of the following muscle is innervated by the IX cranial nerve?
|Muscles Innervated by Cranial Nerves|
|Glossopharyngeal nerve (CN IX)||Stylopharyngeus muscle|
|Vagus nerve (CN X)||Muscles of the palate and pharynx except tensor palati muscle (CN V3) Stylopharyngeus muscle (CN IX) All muscles of the larynx|
|Accessory nerve (CN XI)||Sternocleidomastoid muscle Trapezius muscle|
Where do the sensitive nerve fibers of the IX pair of CN end?
The glossopharyngeal nerve is the 9th cranial nerve (CN IX). It is one of the four cranial nerves that has sensory, motor, and parasympathetic functions. It originates from the medulla oblongata and terminates in the pharynx.
What nerve controls Velopharynx?
Therefore, the facial nerve is considered to be responsible for finer movements of the velopharyngeal muscles than are the glossopharyngeal or the vagus nerve.
What nerve controls soft palate?
The soft palate has five muscles that receive innervation by the pharyngeal plexus of the vagus nerve, except for the tensor veli palatini muscle, which is innervated by a branch of the trigeminal nerve called the medial pterygoid nerve.
What does CN 9 innervate?
The glossopharyngeal nerve (CN IX) supplies organs, muscles and other structures in your mouth and throat. It helps you taste food and sense pain in your throat.
What muscles does cranial nerve 9 innervate?
What does the Palatopharyngeus muscle do?
It attaches superiorly to the hard palate and palatine aponeurosis and inferiorly to the lateral wall of the pharynx. Its function is to tense the soft palate and pull the pharyngeal walls superiorly, anteriorly, and medially during swallowing, effectively closing off the nasopharynx from the oropharynx.
What muscle opens the Eustachian tube?
The eustachian tube opens upon swallowing or yawning by contraction of the tensor veli palatini muscle. Defective tensor veli palatini muscle function in cleft palate results in eustachian tube dysfunction. The role of the levator veli palatini muscle is unclear.
What Innervates the lower esophageal sphincter?
The lower esophageal sphincter is innervated by both parasympathetic (vagus) and sympathetic (primarily splanchnic) nerves; however, the vagal pathways are the ones that are essential for reflex relaxation of the lower esophageal sphincter (LES), such as that which occurs during transient LES relaxations.
What muscles are involved in burping?
When it distends the top of the esophagus, a second reflex is triggered that relaxes a muscle called the upper esophageal sphincter (UES), which partitions the throat from the esophagus. The air then leaves the esophagus to fill the mouth and be expelled. This type of belch is called the gastric belch.
What muscles does cranial nerve 5 innervate?
This branch supplies motor innervation to the facial muscles involved in mastication which include the masseter, temporalis muscle, and the lateral and medial pterygoids.
Which muscles is innervated by cranial nerve VII?
The principal muscles are the frontalis, orbicularis oculi, buccinator, orbicularis oris, platysma, the posterior belly of the digastric, and the stapedius muscle.