What does the greater and lesser palatine nerve innervate?
As they pass through the sphenopalatine ganglion, these sensory branches form the greater and lesser palatine nerves, which provide sensory innervation to the nasal cavity as well as the roof of the mouth, soft palate, and tonsils. It provides sensory innervation to the anterior portion of the nasal cavity.
Where do the greater and lesser palatine nerves come from?
The greater and lesser palatine nerves originate from the inferior surface of pterygopalatine ganglion and pass through the palatine canal.
Where does the greater palatine nerve supply?
Palatine nerves (greater and lesser palatine nerves, as well as the nasopalatine nerve)—to supply the gingiva, mucous membranes of the roof of the mouth (via the greater palatine nerve), soft palate (including uvula), and tonsils (via the lesser palatine nerve) and the palatal structures around the superior anterior …
What nerve passes through the greater palatine foramen?
Maxillary nerve
Maxillary nerve The greater palatine foramen provides a passage for the greater palatine nerve. The lesser palatine nerves pass through the lesser palatine foramina, which are situated just behind the greater palatine foramen (see Fig. 16.5 above).
What nerve fiber types are found in the greater palatine nerve?
The greater palatine nerve (anterior palatine nerve) is a branch of the pterygopalatine ganglion that carries both general sensory fibres from the maxillary nerve and parasympathetic fibers from the nerve of the pterygoid canal.
What is nasopalatine nerve a branch of?
Also known as nervus incisivus, the nasopalatine nerve is a division of the maxillary branch of the trigeminal nerve. Its function is to provide sensation to the anterior palate.
Why is a Palatine nerve block greater?
The greater palatine nerve block is useful for anesthetizing the palatal soft tissues distal to the canine. It is less traumatic than the nasopalatine nerve block because the palatal tissue in the area of the injection site is not as anchored to the underlying bone.
What is the purpose of foramen rotundum?
The foramen rotundum is located at the base of the greater wing of the sphenoid, inferior to the superior orbital fissure. It provides a connection between the middle cranial fossa and the pterygopalatine fossa. The maxillary nerve (branch of the trigeminal nerve, CN V) passes through this foramen.
How is vidian nerve formed?
The vidian nerve is formed by the confluence of the greater superficial petrosal and deep petrosal nerves and travels in the pterygoid canal carrying the parasympathetic fibers, which synapse in the pterygopalatine ganglion, and the postganglionic fibers are distributed with the branches of the maxillary nerve.
Where does the greater palatine nerve pass through?
The greater palatine foramen provides a passage for the greater palatine nerve. The lesser palatine nerves pass through the lesser palatine foramina, which are situated just behind the greater palatine foramen (see Fig. 16.5 above).
Which is part of the palate innervates the soft palate?
It supplies a major portion of the gingiva, mucosa and glands of the hard palate. The lesser palatine nerves pass through the lesser palatine foramen to innervate the soft palate with contributions from the branches of the glossopharyngeal nerve (CN IX).
What are the possible complications of greater palatine?
The lesser palatine nerve, which is just posterior to the greater palatine nerve and innervates the soft palate and uvula, can be inadvertently anesthetized during the greater palatine nerve block. This causes the patient to have the sensation of throat closure or gagging. Provide reassurance to the patient.
What are the risks of a palatine nerve block?
This block anesthetizes the greater and lesser palatine nerves as well as the nasociliary and nasopalatine nerves, which also contribute to the sensory innervation of the nasal cavity. Complications include bleeding, infection, nerve trauma, intravascular injection of local anesthetic, and hypertension.
