USA Neuro Exam 2 ACTUAL QUESTIONS
AND CORRECT ANSWERS
Dura Mater - CORRECT ANSWER - "tough mother"
- most outer layer of meninges
- perforated to allow cranial nerves/vessels
- folds to separate septums separating brain structures
*has periostial and meningeal layer
Separations of the dura membranes create ______ that are important parts of the _______
_________ ________ - CORRECT ANSWER sinuses; venous drainage system
This fold of dura extends into longitudinal fissure separating the right and left hemispheres -
CORRECT ANSWER Falx Cerebri
This fold of dura occurs at the back of the brain and divides the cerebral hemispheres from
the cerebellum - CORRECT ANSWER Tentorium cerebelli
What structure would the falx cerebri and tentorium cerebelli most likely damage during a
high-speed impact to the head? - CORRECT ANSWER corpus callosum
Arachnoid Mater - CORRECT ANSWER - "spiderweb like"
- middle layer of meninges
- adheres to dura mater
,Subarachnoid space - CORRECT ANSWER - b/t pia and arachnoid
- have trabeculae that suspend the brain
- contain major arteries of brain
- contains CSF
Pia Mater - CORRECT ANSWER - thinnest and most delicate meningeal layer
- adheres directly to brain tissue
-follows each gyri and sulci and adheres to spinal cord
Extensions of the pia that extend out from the spinal cord surface to attach and anchor the
spinal cord to the dura called the ________ ________ - CORRECT ANSWER dentate
ligaments
Epidural space - CORRECT ANSWER - lies above the dura
- contains middle meningeal artery (branch of external carotid)
Epidural hematoma - CORRECT ANSWER - b/t skull and dura mater
- typically traumatic rupture of middle meningeal artery (temporal bone fracture)
- may be initially asymptomatic
, *can result in increased ICP, herniation, and death
Subdural hematoma - CORRECT ANSWER - b/t dura and arachnoid
- rupture bridging veins which are susceptible to shear forces
- chronic (elderly)/acute (accidents)
Subarachnoid hemorrhage - CORRECT ANSWER - bleeding into CSF
- severe headaches
During neurulation the _____ _______ becomes the ventricular system - CORRECT
ANSWER neural tube
The 4 Ventricles - CORRECT ANSWER - 2 lateral ventricles
- third ventricle
- fourth ventricle
Choroid Plexus - CORRECT ANSWER - made up of ependymal cells, produce CSF
- cilia movement circulate CSF
- fxn: buoyancy, cushioning, cleaning, ionic balance, pressure gradient
Cisterns - CORRECT ANSWER - within subarachnoid space
- large pockets
*provides place to extract CSF via lumbar puncture
AND CORRECT ANSWERS
Dura Mater - CORRECT ANSWER - "tough mother"
- most outer layer of meninges
- perforated to allow cranial nerves/vessels
- folds to separate septums separating brain structures
*has periostial and meningeal layer
Separations of the dura membranes create ______ that are important parts of the _______
_________ ________ - CORRECT ANSWER sinuses; venous drainage system
This fold of dura extends into longitudinal fissure separating the right and left hemispheres -
CORRECT ANSWER Falx Cerebri
This fold of dura occurs at the back of the brain and divides the cerebral hemispheres from
the cerebellum - CORRECT ANSWER Tentorium cerebelli
What structure would the falx cerebri and tentorium cerebelli most likely damage during a
high-speed impact to the head? - CORRECT ANSWER corpus callosum
Arachnoid Mater - CORRECT ANSWER - "spiderweb like"
- middle layer of meninges
- adheres to dura mater
,Subarachnoid space - CORRECT ANSWER - b/t pia and arachnoid
- have trabeculae that suspend the brain
- contain major arteries of brain
- contains CSF
Pia Mater - CORRECT ANSWER - thinnest and most delicate meningeal layer
- adheres directly to brain tissue
-follows each gyri and sulci and adheres to spinal cord
Extensions of the pia that extend out from the spinal cord surface to attach and anchor the
spinal cord to the dura called the ________ ________ - CORRECT ANSWER dentate
ligaments
Epidural space - CORRECT ANSWER - lies above the dura
- contains middle meningeal artery (branch of external carotid)
Epidural hematoma - CORRECT ANSWER - b/t skull and dura mater
- typically traumatic rupture of middle meningeal artery (temporal bone fracture)
- may be initially asymptomatic
, *can result in increased ICP, herniation, and death
Subdural hematoma - CORRECT ANSWER - b/t dura and arachnoid
- rupture bridging veins which are susceptible to shear forces
- chronic (elderly)/acute (accidents)
Subarachnoid hemorrhage - CORRECT ANSWER - bleeding into CSF
- severe headaches
During neurulation the _____ _______ becomes the ventricular system - CORRECT
ANSWER neural tube
The 4 Ventricles - CORRECT ANSWER - 2 lateral ventricles
- third ventricle
- fourth ventricle
Choroid Plexus - CORRECT ANSWER - made up of ependymal cells, produce CSF
- cilia movement circulate CSF
- fxn: buoyancy, cushioning, cleaning, ionic balance, pressure gradient
Cisterns - CORRECT ANSWER - within subarachnoid space
- large pockets
*provides place to extract CSF via lumbar puncture
