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6. which is true of the ventricles of the brain
- most CSF drains into the spinal cord not the cavity of the brain
- the intraventricular foramen communicates the cerebral aqauduct with the fourth ventricle
- The fourth ventricle is connected to the subarachnoid space through paired lateral and medial apertures
- CSF is not produced in ventricles
- the lateral ventricles are made up of three horns posterior inferior superior
7. in regards to the cranial fossae which is false
- anterior cranial fossa- frontal lobe
- base of skull divided into four fossae
- sella turcica- pituarty fossa
- posterior cranial fossa- occiptal lobe
- middle cranial fossa- temporal lobe
8. cranial fossa foramina which is true
- The foramen magnum is part of the parietal bone
- the optic canal for CN II is situated in the frontal bone
- CN I passes through the cribiform plate in the middle cranial fossa
- the jugular foramen has CN IX,X,XI pass through it
- hypoglossal canal has CN VII pass through it
9. The middle meningeal vein passes behind the pterion plate
10. in regards to meninges which is false?
- the pia is the innermost layer
- continous with the jugular foramen to the spinal cord
- the dura is the outermost layer
- consist of three layers
- venous sinuses run between the dural layers
11. which is true in regards to venous sinuses
- superior saggital sinus runs along the inferior border of the falx cerbi
- venous sinuses are where the endosteum and the dura seperate to accomodate venous channels
- drain into the external jugular veins
- sinuses run between the layers of the pia
- transverse sinus not paired
12. which of the following is false of the cavernous sinus
- can be a route for extracranial infections to spread into intracranial areas
- paired sinus in the lateral aspect of the sphenoid bone
- the internal carotid artery passes through the cavernous sinus
- abducent nerve passes laterally to it
- the cavernous sinus recieves blood from all venous sinuses and drains into the internal jugular
13. which is false in regards to the middle meningeal artery
- divides into anterior and posterior branches
- branch of the maxillary artery which is a branch from the internal carotid
- supplies the greatest part of the dura
- runs directly behind the pterion plate
- easily tamponaded
14. which is false of the vertebral arteries
- arises from the subclavian artery
- join to form the basilar artery
- travels posterior to the transverse processes
- hooks around the top of the atlas
- gives rise to the anterior and posterior spinal arteries
15. the cerebellums arterial supply is from the inferior and superior cerebellar arteries
16. which of the following is not a branch or part of the circle of willis
- superior cerebral artery
- posterior cerebral artery
- anterior communicating artery
- middle cerebral artery
- posterior communicating artery
17. the internal carotids that are part of the circle of willis arise left from the brachiocephalic trunk and right from the aortic arch
18. in regards to arterial territories which is false
- posterior cerbrel occipital cortex
- the anterior cerebeller artery supplies the superior part of the cerebellum
- anterior cerebral artery supplies medial surface of cerebral hemisphere
- middle cerebral most of the lateral aspect of the cortex
- the middle cerebral artery supply the internal capsule and the basal ganglia
19. vertebrobasilar insufficency which is true
- directly effects the anterior and posterior cerebral arteries
- when blood supply to the anterior part of the neck is reduced
- can be a result of flexion of the neck
- can result in TIA or stroke
- sometimes called nurses neck
20. pontine arteries arise from the basilar artery