What can result from a rupture of the middle meningeal vessels?
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 a computed tomogram (CT) scan. Damage to the middle meningeal artery may also result in an aneurysm or arteriovenous fistulas.
What artery is most likely to be injured should there be repeated blows to the pterion?
Head injury This typically occurs when the middle meningeal artery is torn by a skull fracture in the region of the pterion, where the bone is thin and is closely related to the underlying vessel (Fig. 9.4).
Why is middle meningeal artery susceptible to injury?
It is vulnerable to injury at this point, where the skull is thin. Rupture of the artery may give rise to an epidural hematoma. In the dry cranium, the middle meningeal, which runs within the dura mater surrounding the brain, makes a deep groove in the calvarium….
| Middle meningeal artery | |
|---|---|
| FMA | 49711 |
| Anatomical terminology |
Which artery might be damaged by a fracture of the pterion?
ANSWER: The middle meningeal artery (MMA) which provides blood supply to the skull and dura mater runs underneath the pterion and can be damaged by fracture.
What goes through the foramen spinosum?
The foramen spinosum permits the passage of the middle meningeal artery, middle meningeal vein, and the meningeal branch of the mandibular nerve.
How does the middle meningeal artery enter the skull?
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.
What artery passes through foramen spinosum?
The foramen spinosum (plural: foramina spinosa) is located in the posteromedial part of greater wing of sphenoid bone posterolateral to foramen ovale which connects the middle cranial fossa with the infratemporal fossa. It transmits the middle meningeal artery, middle meningeal vein, and (usually) the nervus spinosus.
What runs through foramen spinosum?
What does middle meningeal nerve supply?
The middle meningeal nerve, also known as the meningeal branch of the maxillary nerve, is a branch of the maxillary division of the trigeminal nerve. It supplies the dura of the middle cranial fossa.
What passes through mastoid foramen?
The mastoid emissary vein passes through the mastoid foramen, making the connection between the sigmoid sinus into the posterior auricular and occipital veins [5].
Where does the middle meningeal artery enter the brain cavity?
foramen spinosum
The middle meningeal artery is the dominant supply of the cranial dura. It arises from the first part of the maxillary artery, a terminal branch of the external carotid artery. It enters the middle cranial fossa via the foramen spinosum.