Nasopalatine nerve
Encyclopedia
One branch of the posterior superior nasal branches (Trigeminal nerve
, Maxillary branch), longer and larger than the others, is named the nasopalatine nerve (sometimes called the long sphenopalatine nerve).
It enters the nasal cavity
through the sphenopalatine foramen
, passes across the roof of the nasal cavity
below the orifice of the sphenoidal sinus to reach the septum
, and then runs obliquely downward and forward between the periosteum
and mucous membrane of the lower part of the septum
.
It descends to the roof of the mouth through the incisive canal and communicates with the corresponding nerve of the opposite side and with the greater palatine nerve
.
It supplies the palatal
structures around the upper central and lateral incisors and the canine
s (the upper front six teeth).
It also furnishes a few filaments to the mucous membrane of the nasal septum
.
The medial superior posterior nasal branches of maxillary nerve usually branches from the nasopalatine nerve.
Trigeminal nerve
The trigeminal nerve contains both sensory and motor fibres. It is responsible for sensation in the face and certain motor functions such as biting, chewing, and swallowing. Sensory information from the face and body is processed by parallel pathways in the central nervous system...
, Maxillary branch), longer and larger than the others, is named the nasopalatine nerve (sometimes called the long sphenopalatine nerve).
It enters the nasal cavity
Nasal cavity
The nasal cavity is a large air filled space above and behind the nose in the middle of the face.- Function :The nasal cavity conditions the air to be received by the other areas of the respiratory tract...
through the sphenopalatine foramen
Sphenopalatine foramen
The sphenopalatine foramen is a foramen in the skull that connects the nasal cavity with the pterygopalatine fossa.-Structure:The processes of the superior border of the palatine bone are separated by the sphenopalatine notch, which is converted into the sphenopalatine foramen by the under surface...
, passes across the roof of the nasal cavity
Nasal cavity
The nasal cavity is a large air filled space above and behind the nose in the middle of the face.- Function :The nasal cavity conditions the air to be received by the other areas of the respiratory tract...
below the orifice of the sphenoidal sinus to reach the septum
Septum
In anatomy, a septum is a wall, dividing a cavity or structure into smaller ones.-In human anatomy:...
, and then runs obliquely downward and forward between the periosteum
Periosteum
Periosteum is a membrane that lines the outer surface of all bones, except at the joints of long bones. Endosteum lines the inner surface of all bones....
and mucous membrane of the lower part of the septum
Septum
In anatomy, a septum is a wall, dividing a cavity or structure into smaller ones.-In human anatomy:...
.
It descends to the roof of the mouth through the incisive canal and communicates with the corresponding nerve of the opposite side and with the greater palatine nerve
Greater palatine nerve
The greater palatine nerve is a branch of the pterygopalatine ganglion that carries both general sensory and parasympathetic fibers...
.
It supplies the palatal
Palate
The palate is the roof of the mouth in humans and other mammals. It separates the oral cavity from the nasal cavity. A similar structure is found in crocodilians, but, in most other tetrapods, the oral and nasal cavities are not truly separate. The palate is divided into two parts, the anterior...
structures around the upper central and lateral incisors and the canine
Canine tooth
In mammalian oral anatomy, the canine teeth, also called cuspids, dogteeth, fangs, or eye teeth, are relatively long, pointed teeth...
s (the upper front six teeth).
It also furnishes a few filaments to the mucous membrane of the nasal septum
Nasal septum
The nasal septum separates the left and right airways in the nose, dividing the two nostrils.It is depressed by the Depressor septi nasi muscle.-Composition:The fleshy external end of the nasal septum is sometimes also called columella....
.
The medial superior posterior nasal branches of maxillary nerve usually branches from the nasopalatine nerve.