What is the meaning of middle meningeal artery?
The middle meningeal artery (Latin: arteria meningea media) is typically the third branch of the first portion of the maxillary artery. After branching off the maxillary artery in the infratemporal fossa, it runs through the foramen spinosum to supply the dura mater (the outer meningeal layer) and the calvaria.
What gives rise to middle meningeal artery?
The middle meningeal artery normally arises from the first or mandibular segment of the maxillary artery, just behind the condylar process of the mandible, and enters the skull through the foramen spinosum (see Fig. 2-10A–H).
What part of the brain does the middle meningeal artery supply?
the dura mater
In the skull, it courses in the middle cranial fossa where it provides several branches. The main function of the middle meningeal artery is to provide vascular supply to the dura mater….Middle meningeal artery.
|Supply||Dura mater, cranial bones|
|Clinical importance||Epidural hematoma|
Is middle meningeal artery intracranial?
In these cases, the SA keeps its embryonic origin from the petrous ICA, passes through the middle ear, and gives it 2 branches: one intracranial, which corresponds to the MMA, and the other extracranial, which leaves the cranial cavity through the foramen spinosum.
What is middle meningeal artery embolization?
In theory, embolization of the middle meningeal artery (MMA), which is performed to inhibit blood influx into pathologic structures receiving blood through meningeal arteries, can control bleeding from the CSDH membrane and eventually enhance spontaneous resolution of the hematoma.
Where is the meningeal artery?
Meningeal arteries are found in the outer portion of the dura; they supply it with blood. They also help to supply blood to adjacent skull and have some anastomoses with cerebral arteries. The skull has grooves, or sulci, for the meningeal vessels.
What does the meningeal branch do?
Anatomical Parts After emerging from the intervertebral foramen, each spinal nerve gives off a small meningeal branch which reënters the vertebral canal through the intervertebral foramen and supplies the vertebræ and their ligaments, and the bloodvessels of the medulla spinalis and its membranes.
What does the middle superior alveolar nerve innervate?
The nerves supply the maxillary sinus, mid maxillary oral mucosa, the mesiobuccal root of the first maxillary molar tooth and the premolar teeth.
Where does the middle meningeal vein drain?
The ipsilateral sinus of the lesser wing of sphenoid was opacified from the anterior branches of the meningeal veins and drained into the cavernous plexus (sinus).
What are the clinical implications of the middle meningeal artery (meningeal artery)?
The middle meningeal artery has a number of clinical implications. Rupture of the artery, which most commonly occurs at the pterion, typically leads to an epidural hematoma. The resulting hematoma is described as a “lens-shaped” mass on CT scan. Damage to the middle meningeal artery may also result in an aneurysm or arteriovenous fistulas.
What is the IMA origin of the accessory meningeal artery?
On the contrary, when the IMA passes deep to the external pterygoid muscle, the MMA, and the accessory meningeal artery have distinct origins from the IMA, and the inferior dental and the posterior deep temporal arteries share a common trunk. 2 Low 4 described an interesting cadaveric case of distal (third segment) IMA origin of the MMA.
How do you find the origin of the recurrent meningeal artery?
Frontal views On head CT, aberrant MMA origin can be inferred by absence of foramen spinosum on left (blue arrow on “usual” right side) The recurrent meningeal artery travels along the sphenoid ridge (orange arrows) and then over the convexity (red arrows). Again, only frontal branch is seen
Where does the middle meningeal artery branch off the maxillary artery?
The middle meningeal artery (MMA) normally branches off the maxillary artery, which is an extension of the external carotid artery. The artery will then travel through the foramen spinosum, which is posterolateral from the foramen ovale, to supply blood to the dura mater.