Nervus spinosus
Encyclopedia
The meningeal branch of the mandibular nerve (recurrent branch, nervus spinosus) is a branch of the mandibular nerve
that supplies the dura mater
.
through the foramen spinosum
with the middle meningeal artery
.
It divides into two branches, anterior and posterior, which accompany the main divisions of the artery and supply the dura mater
:
Mandibular nerve
The mandibular nerve is the largest of the three branches of the trigeminal nerve.-Roots:It is made up of two roots:* a large sensory root proceeding from the inferior angle of the trigeminal ganglion....
that supplies the dura mater
Dura mater
The dura mater , or dura, is the outermost of the three layers of the meninges surrounding the brain and spinal cord. It is derived from Mesoderm. The other two meningeal layers are the pia mater and the arachnoid mater. The dura surrounds the brain and the spinal cord and is responsible for...
.
Course
It enters the skullHuman skull
The human skull is a bony structure, skeleton, that is in the human head and which supports the structures of the face and forms a cavity for the brain.In humans, the adult skull is normally made up of 22 bones...
through the foramen spinosum
Foramen spinosum
The foramen spinosum is one of several foramina located in the base of the skull, on the sphenoid bone, situated lateral to the foramen ovale, in a posterior angle.-Contents:It permits the passage of certain arteries, veins and/or other structures:...
with the middle meningeal artery
Middle meningeal artery
The middle meningeal artery is typically the third branch of the first part of the maxillary artery, one of the two terminal branches of the external carotid artery...
.
It divides into two branches, anterior and posterior, which accompany the main divisions of the artery and supply the dura mater
Dura mater
The dura mater , or dura, is the outermost of the three layers of the meninges surrounding the brain and spinal cord. It is derived from Mesoderm. The other two meningeal layers are the pia mater and the arachnoid mater. The dura surrounds the brain and the spinal cord and is responsible for...
:
- The posterior branch also supplies the mucous lining of the mastoid cellsMastoid cellsA section of the mastoid process of the temporal bone of the cranium shows it to be hollowed out into a number of spaces, the mastoid cells, which exhibit the greatest possible variety as to their size and number....
.
- The anterior communicates with the meningeal branchMeningeal branchMeningeal branch can refer to:* Meningeal branches of vertebral artery* Meningeal branch of occipital artery* Meningeal branch of vagus nerve...
of the maxillary nerve.