Final answer:
An epidural hematoma usually involves the laceration of an artery, commonly the middle meningeal artery, which can lead to a build-up of blood and increased intracranial pressure.
Step-by-step explanation:
An epidural hematoma is typically associated with a laceration of an artery within the cranial cavity. This condition occurs when a blood vessel is severed, and blood, including blood components like erythrocytes (red blood cells) and leukocytes (white blood cells), begins to leak out and collect in the space between the skull and the dura mater. The middle meningeal artery, in particular, is often involved in epidural hematomas when it is damaged, usually due to a fracture of the temporal bone.
The build-up of blood can create pressure on the brain, potentially causing damage if not treated promptly. When reviewing cerebral circulation, it's important to note the key role of the circle of Willis, a network of arteries at the base of the brain that ensures continual blood supply to the cerebral tissue.