Neupsy Key

The anterior cranial fossa is the shallowest of the three fossae and lodges the lower parts of the frontal lobes of the brain. The sulci and gyri of the lobes…

The arcuate eminence is produced by the superior semicircular canal of the internal ear. Anterolateral to this eminence is a thin plate of bone, the tegmen tympani, forming the roof…

The anterior part, or brow, is formed by the frontal bone, which extends backward to the coronal suture between the frontal bone and the parietal bones. The latter bones curve…

The incisive foramen transmits the terminal branches of the nasopalatine nerves and greater palatine vessels. The major and minor palatine foramina are traversed by the corresponding arteries and nerves. The…

The lower face is supported by both the maxillary alveolar processes and the mandible. The inferior margin of each maxilla projects downward as the curved alveolar process, which unites in…

The occipital bone bounds most of the posterior cranial fossa. It is pierced by the foramen magnum, through which the medulla oblongata and spinal cord, surrounded by their meninges, become…

CEREBRAL VENOUS THROMBOSIS Cerebral venous thrombosis (CVT) most often has a subacute presentation; however, a minority of patients present with thunderclap headache. Headaches are persistent and tend to be worse…

The convex anterior surface of the frontal bone is relatively smooth, but there are frontal tuberosities, or elevations, on each side. In early life, a median suture separates the two…

Carotid or vertebral arterial dissection may also occur after trauma. These often manifest as a unilateral headache, with or without neck pain, and may be associated with focal neurologic signs,…

Cerebrospinal fluid is normal or near normal (mild elevations in protein or white blood cells). MRI and CT may be normal, may show features similar to posterior reversible encephalopathy syndrome…