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38 Cards in this Set
- Front
- Back
Pia mater - what is it? where is it?
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It is a delicate investment that is closely applied to the brain and dips into fissures and sulci;
it enmeshes blood vessels on the surface of the brain |
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Arachnoid layer
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Is located outside the pia mater; is connected to the pia mater by web-like trabeculations;
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Subarachnoid space is between what two layers? Contains what?
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btw pia mater and arachnoid mater, filled with CSF
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Arachnoid villi
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projections of arachnoid layer into the venous sinuses; is the site where CSF drains into blood
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CSF - where is it found? where is it produces?
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found in the subarachnoid space btw pia and arachnoid layers; found in ventricles of the brain; formed by choracoid plexuses in the ventricles
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Dura mater - where is it? what does it form?
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tough, fibroud OUTERMOST layer of meninges;
forms the DURAL VENOUS SINUSES |
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Epidural Space
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lies outside the dura mater, is a POTENTIAL space that contains the middle meningeal artery in the cranial cavity
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Subdural Space
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is internal to the dura mater, between the dura mater and arachnoid mater
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Pial hemorrhage
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due to damage to the small vessels of the pia and brain tissue
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Cerebral hemorrhage
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caused by rupture of the LENTICULOSTRIATE arteries
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Subarachnoid hemorrhage
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due to rupture of CEREBRAL arteries, CIRCLE OF WILLIS
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Subdural hematoma
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due to rupture of CEREBRAL VEIN
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Epidural hematoma
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rupture of MIDDLE MENINGEAL ARTERY
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Innervation of the dura mater from what nerves?
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1) anterior and posterior ethmoidal from V1
2) Meningeal branches of maxillary and mandibular 3) Meningeal branches of vagus & hypoglossal |
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Falx Cerebri - what is it? what does it contain?
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IS a sickle-shaped double layer of the dura mater, lies btw the cerebral hemispheres; contains the inferior sagittal sinus & superior sagittal sinus
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What two things does the Falx Cerebri attach to?
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anteriorly to CRISTA GALLI,
posteriorly to TENTORIUM CEREBELLI |
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Falx Cerebelli lies between...and contains...is attached to...
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the two cerebellar hemispheres;
contains the occipital sinus; attached to the posterior and inferior parts of the tentorium |
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Tentorium Cerebelli - what does it cover? what is it attached to?
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covers the cerebellum;
free border is attached to anterior clinoid process; attached border is attached to the posterior clinoid process |
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The diaphragm sellae forms the roof over what structure? What lies beneath it?
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Forms roof over sella turcica of sphenoid; covers the pituitary gland (hypophysis)
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Superior sagittal sinus receives...
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cerebral, diploic meningeal, parietal emissary veins
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Inferior Sagittal sinus joins...
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the great cerebral vein of Galen
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Straight Sinus is formed by the union of...
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the inferior sagittal sinus and the greatn vein of Galen
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Transverse Sinus run along..
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the edge of the tentorium cerebelli from the confluence of sinuses, becomes the sigmoid sinuses
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Sigmoid sinuses are a continuation of the...and become...
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transverse sinuses;
become the IJV at the jugular foramen |
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Cavernous Sinuses are located where?
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on each side of the sella turcica and the body of the sphenoid bone; lie btw the two layers of dura mater;
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What structures are located within the Cavernous Sinuses?
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the Internal Carotid artery & the Abducens nerve (CN VI)
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What structures pass in the lateral wall of the cavernous sinus?
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OTOM:
Oculomotor (CN III) Trochlear (CN IV) Opthalmic (CN V1) Maxillary (CN V2) |
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Superior Petrosal sinus connects...
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the posterior end of the cavernous sinus to the transverse sinus
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Inferior Petrosal sinus connects...
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cavernous sinus to IJV
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Occipital Sinus is where? drains to where?
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lies in falx cerebelli and crains into confluence of sinuses
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Basilar plexus connects...
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the two inferior petrosal sinuses
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Internal Carotid artery enters the cranial cavity via what channel?
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the carotid canal
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Branches of the internal carotid artery...
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1) Opthalmic
2) posterior communicating artery 3) middle cerebral artery 4) anterior cerebral artery 5) anterior choroidal artery |
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Vertebral artery runs in the...
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transverse foramina of vertebrae C1-C6
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Vertebral arteries join to form...
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basilar artery
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Branches of the vertebral artery...
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posterior spinal artery,
anterior spinal artery, posterior-inferior cerebellar artery |
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Basilar artery branches
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pontine,
labyrinthe, superior-inferior cerebellar, anterior cerebellar, posterior cerebral arteries |
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Circle of Willis is formed by...
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anterior cerebral arteries,
anterior communicating artery, middle cerebral artery, posterior cerebral artery, posterior communicating artery |