Meninges and Circulation of the Brain Flashcards
Deepest layer of the meninges
Pia mater
Middle layer of the meninges
Arachnoid mater
Most superficial layer of the meninges
Dura mater
What are the two layers of the dura mater
Periosteal and meningeal
1, 2, 3, 4, 5
1- Pia mater
2- Subarachnoid space
3- Arachnoid mater
4- Meningeal dura mater
5- Subdural space (potential space)
6, 7, 8, 9, 10
6- Periosteal dura mater
7- Dura mater
8- Superior sagittal sinus
9- Arachnoid granulations
10- Falx cerebri
Where are CSF and blood vessels normally found within the meninges?
Subarachnoid space
What are the two potential spaces of the meninges?
Subdural and extradural
1, 2, 3, 4, 5
1- Superior sagittal sinus
2- Straight sinus
3- Tentorium cerebelli
4- Transverse sinus
5- Sigmoid sinus
6, 7, 8, 9, 10
6- Falx cerebri
7- Inferior sagittal sinus
8- Superior and inferior petrosal sinuses
9- Cavernous sinus
10- Internal jugular vein
Through where does CSF pass to become venous blood?
Arachnoid granulations
Where does the falx cerebri attach?
Crista galli
Where do the falx cerebri and tentorium cerebelli meet?
Straight sinus
What is it called when a blow to the head displaces the brain and ruptures a blood vessel?
Usually subdural hemorrhaging, it can also be epidural hemorrhaging. Both can lead to a hematoma.
Vertebral aa. are branches of what artery?
Subclavian aa.
Vertebral aa. ascends through what structure of the vertebrae?
Transverse foramina of cervical vertebrae
The vertebral aa. enter the skull through which opening?
Foramen magnum
Internal carotid aa. are branches from what artery?
Common carotid a.
Through what do the internal carotid aa. enter the skull?
Carotid canal to enter the base of the skull, then they enter the cranial vault from above the foramen lacerum.
1, 2, 3, 4, 5
1- Anterior cerebral a.
2- Anterior communicating a.
3- Internal carotid a.
4- MIddle cerebral a.
5- Posterior communicating a.
6, 7, 8, 9
6- Posterior cerebral a.
7- Superior cerebellar a.
8- Basillar a.
9- Vertebral a.
1, 2, 3, 4, 5
1- Anterior communicating a.
2- Anterior cerebral a.
3- Middle cerebral a.
4- Internal carotid a.
5- Posterior communicating a.
6, 7, 8, 9, 10
6- Posterior cerebral a.
7- Superior cerebellar a.
8- Basillar a.
9- Labyrinthine a.
10- Anterior inferior cerebellar a.
11, 12, 13
11- Vertebral a.
12- Posterior inferior cerebellar a.
13- Anterior spinal a.
