What nerve Innervates the nasopharynx?
Nerve supply to the nasopharynx is primarily derived from branches of the glossopharyngeal (IX), the vagus (X), and the sympathetic nerves, although the maxillary (V2) branch of the trigeminal (V) nerve supplies the sensory innervation of the anterior portion of the roof and floor of the nasopharynx and the motor …
What nerve Innervates the Stylopharyngeus?
All the muscles of the pharynx receive innervation from the tenth cranial nerve (vagus nerve) except the stylopharyngeus, which is innervated by the ninth cranial nerve (glossopharyngeal nerve).
What is the sensory and motor innervation of the pharynx?
The pharyngeal branches of the vagus nerve provide motor innervation to all the structures and muscles of the pharynx, except the stylopharyngeus. The latter receives motor innervation from the glossopharyngeal nerve.
What muscles are innervated by pharyngeal plexus?
The superior, middle and lower pharyngeal constrictor muscles, palatopharyngeus, salpingopharyngeus, levator veli palatini, palatoglossus and the muscle of the uvula are all innervated by branches of the pharyngeal plexus 1-5.
What is the Stylohyoid innervated by?
Nerve supply derives from the second pharyngeal arches (facial nerve). It is the stylohyoid branch of the facial nerve (cranial nerve VII) that innervates this muscle. Sometimes, the nerve towards the posterior belly of the digastric (branch of the facial nerve) also gives a branch to the stylohyoid muscle.
What is nasopharyngeal structure?
The nasopharynx represents the most superior portion of the pharynx, bounded superiorly by the skull base and inferiorly by the soft palate. The nasopharynx connects the nasal cavity to the oropharynx and contains the Eustachian tube openings and adenoids.
What happens in the nasopharynx?
This area is called the nasopharynx. The nasopharynx is precariously placed at the base of your skull, above the roof of your mouth. Your nostrils open into the nasopharynx. When you breathe, air flows through your nose into your throat and nasopharynx, and eventually into your lungs.
What is the innervation of the external nose?
Innervation. Sensory innervation of the external nose is derived from the trigeminal nerve (CN V). The external nasal nerve, a branch of the ophthalmic nerve (CN V 1 ), supplies the skin of the dorsum of nose, nasal alae and nasal vestibule. The lateral aspects of the nose are supplied by the infrorbital nerve,…
What is the venous supply to the nasopharynx?
The pterygoid and pharyngeal plexus are responsible for the venous supply to the nasopharynx [4]. The maxillary nerve or CN V2 provides the nerve supply in this area [2].
What muscles are close to the nasopharynx?
Muscles: Pharyngeal constrictor muscles, the levator palatini muscle are two muscles in close relation with the nasopharynx. Sinus of Morgagni: Sinus of Morgagni is a defect in the lateral pharyngeal wall at the level of nasopharynx, formed due to dehiscence in superior constrictor muscle, which fails to reach the base of the skull.
What nerve innervates the nasal septum and the anterior hard palate?
It emerges onto the premaxillary region of the palate via the incisive foramen. At this point the nasopalatine nerve communicates with both of the greater palatine nerves, supplying the nasal septum and the anterior hard palate (Piagkou et al., 2011 ).