Flashcards in Blood Supply to the Brain and Spinal Cord Deck (43)
At what spinal level does the common carotid artery bifurcate?
What is the pathway of the ICA into the cranial cavity?
Move up the carotid sheath to the carotid canal
Pass through the cavernous sinus
What branches does the ICA give rise to?
What arteries give rise to the vertebral arteries?
What is the pathway of the vertebral arteries into the cranial cavity?
Transverse foramen in the spine
What branches do the vertebral arteries give rise to?
Anterior and posterior spinal
Posterior inferior cerebellar
In which fissure is the anterior cerebral artery found?
In which fissure is the middle cerebral artery found?
In which fissure is the posterior cerebral artery found?
What functional areas does the middle cerebral artery supply?
Primary motor cortex
Primary sensory area
Primary auditory area
Area for olfaction
Where does the primary visual cortex receive its blood supply from?
Calcarine branch of posterior cerebral artery
What artery is formed from the convergence of the vertebral arteries?
What main arteries form the Circle of Willis?
Anterior cerebral arteries
Internal carotid arteries
Posterior cerebral arteries
What part of the brain does the anterior cerebral artery supply?
Anteromedial part of the cerebrum
What part of the brain does the middle cerebral artery supply?
Lateral part of the brain
What part of the brain does the posterior cerebral artery supply?
Posterior part of the cerebrum
What arteries supply the spinal cord?
Anterior spinal artery
2 posterior arteries
Where do the venous sinuses ultimately drain to?
Internal jugular vein
How many venous sinuses are there?
What venous sinuses are found in the fall cerebri?
Superior sagittal sinus
Inferior sagittal sinus
Where do the sinuses converge?
Confluence of the sinuses
What pathway does the confluence of sinuses take to the internal jugular vein?
Transverse to sigmoid to internal jugular vein
Where is the cavernous sinus located?
Either side of the sella turcica
What drains into the cavernous sinus?
What are the superficial veins which drain the cerebral cortex?
Superior cerebral vein
Superficial middle cerebral vein
Inferior cerebral vein
Superior anastamotic vein
Inferior anastomotic vein
What veins are responsible for draining the cerebellar cortex?
Superior cerebellar veins
Inferior cerebellar veins
What veins are responsible for draining the spinal cord?
3 anterior spinal veins
3 posterior spinal veins
What is the function of the ventricles?
Production, transport and removal of CSF
What is the function of cerebrospinal fluid?
Protection (cushions brain)
Buoyancy (reduces weight of brain, so reduced pressure on base)