Hemispheres 3.0 - Level I Brain anatomy and Physiology Exam with accurate detailed answers

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Hemispheres 3.0 - Level I Brain anatomy and Physiology Exam with || || || || || || || || || || ||




accurate detailed answers || ||




Periosteum

Thick, fibrous, vascular membrane covering skull surface
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Epidural space ||




Potential space between skull and dura mater, seen when filled with blood, usually from
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trauma




Dura mater
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Tough, fibrous membrane made of two layers, periosteal and menigeal
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Periosteal layer of dura mater
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outermost layer - adheres to the cranial vault and serves as the periosteum of the skull
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Meningeal layer ||




inner layer
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covers the arachnoid mater and separates in some areas to form dural folds and venous
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sinuses

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Subdural space ||




potential space between dura mater and arachnoid mater; seen when filled with blood,
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usually from trauma || ||




Arachnoid mater ||




middle spiderweb-like layer|| ||




subarachnoid space ||




cerebrospinal fluid-filled space between arachnoid mater and pia mater and is continuous
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between the brain and spinal cord|| || || || ||




Pia mater
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Delicate, innermost layer completely lining the brain and its contours containing networks
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of capillaries
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Grey Matter ||




nerve cell bodies that form the thinking part of the brain and spinal cord
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White matter ||




myelinated nerve fibers involved with nerve conduction of the brain and spinal cord
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Blood-brain barrier ||




Located between capillaries and interstitial fluid, it selectively regulates what substances
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circulating in the blood reach brain tissue || || || || || ||




Dural folds ||




inner meningeal layer of the dura that separates from the periosteal layer and creases to
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form dural folds or reflections. Dural folds separate and compartmentalize the brain into
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various regions ||




Falx Cerebri
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Largest dural fold || ||




Separates cerebrum into left and right hemispheres along the longitudinal fissure
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Tentorium cerebelli ||




second largest dural fold, separates the cerebellum and occipital lobe of cerebrum
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Supratentorial

Term used clinically to describe the area above the tentorium where the cerebrum is located
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Infratentorial

term used clinically to describe the area below the tentorium where the cerebellum and
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brainstem are located || ||

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Choroid Plexus Structures || ||




contained within the ventricle and form cerebrospinal fluid (CSF)
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Foramen of Monro || ||




Channels that connect the lateral ventricles with the third ventricle
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Used as a leveling point for intracranial pressure monitoring
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Lateral ventricles
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Both hemispheres - located in the cerbrum
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Third ventricle
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Located in the narrow channel between cerebral hemispheres
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Communicates with lateral ventricles through the foramen of Monro
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Fourth ventricle location
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Located between pons, medulla, and cerebellum and continues to the central canal of spinal
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cord
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Fourth ventricle connections
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