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23 Cards in this Set
- Front
- Back
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Meninges
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made of
1. Dura Mater 2. Arachnoid Mater 3. Pia Mater |
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Dura Mater
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Cranial Region
Dural folds |
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Cranial region
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external layer
internal layer venous sinuses |
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external layer
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serves as internal periosteum of skull bones surrounding brain
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internal layer
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meningeal layer, continous with spinal dura mater through foramen magnum
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venous sinuses
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above layers are fused except separations filled with venous blood, between 2 dura layers
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Dural folds
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falx cerebri
Tentorium cerebelli Falx Cerebelli Diaphragma Sellae |
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Falx cerebri
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attached to crista galli and frontal crest
blends w/ tentorium posteriorly |
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Tentorium Cerebelli
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-attaches along grooves for transverse sinuses posteriorly
-attaches to superior part of temporal bone laterally -anterior and medial portion make up tentorial notch |
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Falx Cerebelli
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-attaches to internal occipital crest posteriorly
-attaches to tentorium cerebelli superiorly anterior edge is free |
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Diaphragma sellae
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covers sella turcica
contains a hole for infundibulum to go through to attach to the hypothalamus |
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Arachnoid Mater
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Cranial Region
Spinal Region Subarachnoid space Subarachnoid cisternae Arachnoid granulations |
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Cranial region
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applied to inner surface of dura and attaches to underlying pia mater
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Spinal region
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continuous with cranial
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Subarachnoid space
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CSF between arachnoid and pia mater
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subarachnoid cisternae
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expanded regions of subarachnoid space
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Arachnoid granulations
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tufts of arachnoid lining of arachnoid contacts the endothelium of the sinus and CSF is returned to the blood plasma across these linings
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Pia mater
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thin, delicate vascular layer which adheres to brain surface dipping into fissures and sulci
Cranial Region Spinal Region |
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Cranial region
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some blood vessels supplying nervous tissue are located in pia
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spinal region
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thicker and less vascular
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Meningeal Spaces
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epidural space-between skull and dura
subdural-between dura arachnoid subarachnoid-CSF ONLY |
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Ventricular System
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Lateral ventricles
Interventricular foramen of Monroe 3rd Ventricle Aqueduct of Sylvius 4th Ventricle Choroid Plexus |
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Dural Venous Sinuses
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Superior and Inferior Sagittal
Great vein of Galen Straight Confluens Transverse Superior petrosal Cavernous Sigmoid Emissary Diploic |
