Meninges Flashcards
Seiden
Cranial dura is composed of both ____ and ____ Dura, whereas spinal dura is just one dura layer. This is why there is no epidural space in cranial levels.
Meningeal, Periosteal
In the head, the meningeal dura is connected to the perisosteal dura everywhere except for one region called the ____ ___ Dural Venous Sinus. This sinus continues down and creates another sinus just out of the Meningeal dura called the ____ ____.
Superior Sagittal, Inferior Sagittal
If the Middle Meningeal Artery ruptures, it causes a _____ Hematoma. However if a Cortical Bridging Vein ruptures, it causes a _____ Hematoma. This makes sense because the Middle Meningeal artery is found on the periosteal dura.
Epidural, Subdural.
Veins outside of the skull communicating inside the brain is known as a ___ vein, which do not have valves, so they are susceptible to backflow.
Emissary
The skull’s Supratentorial region contains right and left ____ hemispheres, whereas the infratentorail region contains right and left ______ hemispheres
Cerebral, Cerebellar
The veins in the skull have a Superior and inferior Sagittal sinus that both drain down from anterior to posterior through the straight sinus. After this, from this confluence of Sinuses, the Sigmoid and Inferior Petrosal Sinus come together and exit as One Vessel known as the ____ _____ Vein
Internal Jugular
The Lateral Ventricles (1&2) lead to the third ventricle via the Joining Opening known as the _______ ______ (_____)
Interventricular Foramen of (Monro)
The Third Ventricle leads to the Fourth ventricle via the brain’s collecting tube called the _____ ____ (_____)
Cerebral Aqueduct (Sylvius)
From the Fourth Ventricle, once the CSF reaches the central canal they enter the Subarachnoid space via either the Opening on the side known as the _____ ____ (______), or the Opening more on the middle known as the _____ ____ (Magendie)
Lateral Foramina (Luschka)
Median Foramen (Magendie)
A communicating Hydrocephalus is a problem due to _____, whereas a Non-Communicating Hydrocephalus is due to _____
- Resorption (Meningitis)
- Obstruction (Tumor)
The Circle of Willis could be split into two halves. The cerebral part’s main supply is the _____ _____ Artery. The Basilar part’s main supply is the _____ Artery.
Basilar, Vertebral
The _____ _____ Artery links the Cerebral and Basilar halves of the circle of Willis.
Posterior Communicating
In regards to cranial blood supply, The Anterior and Posterior Spinal arteries both derive from the _______ Artery.
Vertebral
The Superior Cerebellar, Pontine Artery, and Anterior Inferior Cerebellar artery all derive from the ______ Artery.
Basilar
The Posterior Communicating Artery connects the ______ and _____ Cerebral arteries together to join the Cerebral and Basilar halves of the Circle of Willis
Middle, Posterior