- The cerebral aqueduct is prone to occlusion, leading to hydrocephalus.
High-Yield Facts 63
Lateral ventricles Foramina of Monro Third ventricle
(interventricular)
Third ventricle Cerebral aqueduct Fourth ventricle
Fourth ventricle Foramina of Cisterna magna of subarachnoid space
Magendie
and Luschka
CSF IS PRODUCED BY THE CHOROID PLEXUSES THAT
PROJECT INTO THE VENTRICLES OF THE BRAIN
CSF Production Through Into
Subarachnoid space Arachnoid villi Superior sagittal venous sinus
From Through CSF Uptake
Epicranial Resolves Subaponeurotic space Superficial vessels
Epidural Life-threatening Epidural space Torn middle meningeal artery
Subdural Serious Subdural space Torn cerebral vein (usually)
Subarachnoid Lethal Subarachnoid space Torn cerebral artery, cerebral
aneurysm
Subpial Usually resolves Cerebrum Cerebral contusion
CRANIAL AND CEREBRAL HEMATOMAS
Hematoma Prognosis Location Cause
- Regions of the orbitthat are prone to fracture include the ethmoid lam-
ina papyracea and the maxilla near the infraorbital groove.
- Contraction of the orbicularis oculi muscle, innervated by the facial
nerve,produces the blink.
