The greater petrosal nerve joins with the deep petrosal nerve (postganglionic sympathetic axons from the internal carotid plexus) and continues as the nerve of the pterygoid canal and ultimately synapses with the pterygopalatine ganglion whose parasympathetic postganglionic fibers synapse with the lacrimal gland and …
Where is the sphenopalatine nerve located?
The sphenopalatine ganglion (SPG) is a collection of nerves (sympathetic, parasympathetic and some sensory). It lies in a bony cavity called the pterygopalatine fossa, which is deep in the midface.
What does the nasopalatine nerve innervate?
The anterior palatine nerve innervates the gingivae and the structures of the maxillary teeth as far forward as the canines, while the nasopalatine nerve primarily innervates the mucosa surrounding the incisive papilla and the gingival margins of the maxillary incisors.
What Innervates Nasociliary nerve?
The branches of the nasociliary nerve provide sensory innervation to structures surrounding the eye such as the cornea, eyelids, conjunctiva, ethmoid air cells and mucosa of the nasal cavity.
What is Pterygopalatine fossa?
The pterygopalatine fossa (PPF) is a cone-shaped depression deep to the infratemporal fossa and posterior to the maxilla on both sides of the skull. The fossa is located between the pterygoid process and the maxillary tuberosity, close to the orbital apex.
Where is pterygopalatine ganglion located?
Anatomy. The sphenopalatine (pterygopalatine) ganglion resides in the pterygopalatine fossa, located posterior to the middle nasal concha and anterior to the pterygoid canal. It is adjacent to and inferior to the maxillary nerve, a branch of the trigeminal nerve, and connects with it via the pterygopalatine nerves.
Where is the pterygopalatine fossa located?
The pterygopalatine fossa (PPF) is a small, clinically inaccessible, fat-filled space located in the deep face that serves as a major neurovascular crossroad between the oral cavity, nasal cavity, nasopharynx, orbit, masticator space, and the middle cranial fossa.
What is sphenopalatine ganglion neuralgia?
Sphenopalatine ganglion (SPG) neuralgia is a complex disease characterized by chronic head and neck pain, often accompanied by autonomic features. Although symptoms are highly variable, patients typically experience dull headaches associated with pain in the maxillary arch and teeth.
How does the greater petrosal nerve enter the Pterygopalatine fossa?
Leaving the geniculate ganglion, the greater petrosal nerve pierces the upper surface of petrous temporal bone, enters the middle cranial fossa, is joined at foramen lacerum by the deep petrosal nerve (sympathetic fibres from internal carotid plexus) to form the nerve of the pterygoid canal, which goes to the …
What does the greater petrosal nerve innervate?
The greater petrosal nerve is a mixed nerve carrying parasympathetic, taste, and sensory fibers. … The greater palatine nerve that innervates the bony hard palate of the mouth. The lesser palatine that innervates the uvula, tonsils and soft palate.
Where is the greater petrosal nerve?
the greater petrosal nerve, which comes from the facial nerve and runs through the hiatus on the anterior surface of the petrous portion of the temporal bone. a communicating branch with the greater petrosal nerve, which comes from the tympanic cavity, having originated at the glossopharyngeal nerve.
What is a ganglion nerve?
A ganglion is a collection of neuronal bodies found in the voluntary and autonomic branches of the peripheral nervous system (PNS). Ganglia can be thought of as synaptic relay stations between neurons. The information enters the ganglia, excites the neuron in the ganglia and then exits.
What is the mandibular nerve?
The mandibular nerve supplies the teeth and gums of the mandible, the skin of the temporal region, part of the auricle, the lower lip, and the lower part of the face (see Figure 4-2, V3). The mandibular nerve also supplies the muscles of mastication and the mucous membrane of the anterior two-thirds of the tongue.
What goes through the Pterygopalatine fossa?
The inferior orbital fissure forms the superior boundary of the pterygopalatine fossa and communicates with the orbit. It is a space between the sphenoid and maxilla bones. The zygomatic branch of the maxillary nerve and the infraorbital artery and vein pass through the inferior orbital fissure.
What nerve is in the pterygopalatine fossa?
The zygomatic nerve originates in the pterygopalatine fossa, and it then passes into the orbit via the inferior orbital fissure. It then runs on the outer wall of the orbit and terminates as two branches—the zygomaticotemporal and the zygomaticofacial nerves.
Which of the following nerve is a content of the pterygopalatine fossa?
At the pterygopalatine fossa, the maxillary nerve (V2) gives rise to the zygomatic nerve, the posterior superior alveolar nerve, and two ganglionic branches, while its main trunk continues into the inferior orbital fissure as the infraorbital nerve.
What is the communication of the pterygopalatine fossa with the cavity of the skull?
It is the indented area medial to the pterygomaxillary fissure leading into the sphenopalatine foramen. It communicates with the nasal and oral cavities, infratemporal fossa, orbit, pharynx, and middle cranial fossa through eight foramina.
What does the facial nerve supply?
The facial nerve provides motor innervation of facial muscles that are responsible for facial expression, parasympathetic innervation of the glands of the oral cavity and the lacrimal gland, and sensory innervation of the anterior two-thirds of the tongue.
What nerve fiber types are found in the Greater Palatine Nerve?
The greater palatine nerve carries both general sensory fibres from the maxillary nerve, and parasympathetic fibers from the nerve of the pterygoid canal. It supplies the gums, the mucous membrane and glands of the hard palate, and communicates in front with the terminal filaments of the nasopalatine nerve.
What does lacrimal nerve do?
The lacrimal nerve provides sensory innervation to the lacrimal gland, conjunctiva of the lateral upper eyelid and superior fornix, the skin of the lateral forehead, scalp and lateral upper eyelid.
Where does the maxillary artery enter the pterygopalatine fossa?
The maxillary artery, the larger of the two terminal branches of the external carotid artery, arises behind the neck of the mandible, and is at first imbedded in the substance of the parotid gland; it passes forward between the ramus of the mandible and the sphenomandibular ligament, and then runs, either superficial …
What nerve passes through the inferior orbital fissure?
The zygomatic nerve starts within the pterygopalatine fossa and enters the orbit via the inferior orbital fissure dividing into two named branches, that is, zygomaticotemporal and zygomaticofacial nerves.
Is the nasociliary nerve sensory or motor?
The nasociliary nerve is the sensory nerve to the eye. It enters the orbit through the superior orbital fissure, inside the cone formed by the muscles of the globe. It is on a lower plane, therefore, than the lacrimal and frontal nerves. It lies between the two divisions of the oculomotor nerve.