SCRN Review Exam 2025 Questions
and Answers
periosteum - --Answer --dense fibrous layer containing blood vessels; covers
and protects bony surfaces
skull - --Answer --hard bony structure; protects the brain
meninges - --Answer --area between brain and skull; consists of three
membranes
dura mater: periosteal - --Answer --tough, fibrous outer layer of the dura
mater; adheres to periosteum of cranial vault
dura mater: meningeal - --Answer --inner layer of dura mater involved in the
formation of dural folds and continues on to the spinal cord
dura mater: subdural space - --Answer --space between dura matter and
arachnoid mater
arachnoid mater - --Answer --middle inner protective layer, soft & spongy
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,subarachnoid and CSF - --Answer --space between the arachnoid mater and
pia mater
pia mater - --Answer --inner most layer, surrounds the brain, contains blood
vessels that travel into the brain
CSF - --Answer --clear, colorless fluid which circulates around the brain and
spinal cord
brain tissue - --Answer --gray matter and white matter
gray matter - --Answer --nerve cell bodies, dendrites, supportive tissue;
central processing unit of the brain and spinal cord
white matter - --Answer --myelinated nerve fibers - conducting pathway of
the brain and spinal cord
blood brain barrier - --Answer --protects brains cells and CSF from harmful
chemicals circulating the body
subdural space - --Answer --head trauma is the usual cause for bleeding here
CSF flow - --Answer --left and right lateral ventricles >> third ventricle >>
foramen of monroe >> aqueduct of sylvius >> fourth ventricle >> foramen
lucksha >> foramen of magendle >> central canal spinal cord
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
,purpose of CSF - --Answer --surrounds all exposed surfaces of CSF -
interchanges with interstitial fluid of the brain; transports nutrients, chemical
messengers, and waste products
choroid plexus - --Answer --brain tissue producing CSF; produces 500mL
per day; establishes the blood brain barrier; liquid is filtered from the blood by
these specialized cells producing CSF; produces CSF in the ventricular system with
the majority being produced in the lateral ventricles
removes waste products from CSF - adjusting composition
where is CSF reabsorbed - --Answer --into venous sinus blood through the
arachnoid granulations
adult CSF: specific gravity - --Answer --1.003 - 1.008
adult CSF: total cell count - --Answer --normal RBCs (4.7-6.1), less than 5
lymphocytes
adult CSF: total protein - --Answer --15-45 mg/dl (up to 70 mg/dl)
adult CSF: glucose - --Answer --50-75 mg/dl
adult CSF: pressure - --Answer --0-15 mm/hg when supine
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
, adult CSF: average circulatory volume - --Answer --100-150 ml
central sulcus - --Answer --divides the frontal and parietal lobess
lateral sulcus - --Answer --divides the frontal and temporal lobes
longitudinal fissue - --Answer --deep groove that separates the two brain
hemispheres (left and right)
tentorium cerebelli - --Answer --prominent fold in the meningeal layer of the
dural mater
tentorium - --Answer --located between cerebrum and cerebellum and
supports the occipital lobe
supratentorium - --Answer --describes the region above the tentorium
occipital lobe - --Answer --visual processing, visual spatial processing,
motion perception, color discrimination
temporal lobe - --Answer --speech and memory; recognition of auditory
stimuli
cerebellum - --Answer --coordination of voluntary motor movement;
balance and equilibrium; muscle tone
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 4
and Answers
periosteum - --Answer --dense fibrous layer containing blood vessels; covers
and protects bony surfaces
skull - --Answer --hard bony structure; protects the brain
meninges - --Answer --area between brain and skull; consists of three
membranes
dura mater: periosteal - --Answer --tough, fibrous outer layer of the dura
mater; adheres to periosteum of cranial vault
dura mater: meningeal - --Answer --inner layer of dura mater involved in the
formation of dural folds and continues on to the spinal cord
dura mater: subdural space - --Answer --space between dura matter and
arachnoid mater
arachnoid mater - --Answer --middle inner protective layer, soft & spongy
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,subarachnoid and CSF - --Answer --space between the arachnoid mater and
pia mater
pia mater - --Answer --inner most layer, surrounds the brain, contains blood
vessels that travel into the brain
CSF - --Answer --clear, colorless fluid which circulates around the brain and
spinal cord
brain tissue - --Answer --gray matter and white matter
gray matter - --Answer --nerve cell bodies, dendrites, supportive tissue;
central processing unit of the brain and spinal cord
white matter - --Answer --myelinated nerve fibers - conducting pathway of
the brain and spinal cord
blood brain barrier - --Answer --protects brains cells and CSF from harmful
chemicals circulating the body
subdural space - --Answer --head trauma is the usual cause for bleeding here
CSF flow - --Answer --left and right lateral ventricles >> third ventricle >>
foramen of monroe >> aqueduct of sylvius >> fourth ventricle >> foramen
lucksha >> foramen of magendle >> central canal spinal cord
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
,purpose of CSF - --Answer --surrounds all exposed surfaces of CSF -
interchanges with interstitial fluid of the brain; transports nutrients, chemical
messengers, and waste products
choroid plexus - --Answer --brain tissue producing CSF; produces 500mL
per day; establishes the blood brain barrier; liquid is filtered from the blood by
these specialized cells producing CSF; produces CSF in the ventricular system with
the majority being produced in the lateral ventricles
removes waste products from CSF - adjusting composition
where is CSF reabsorbed - --Answer --into venous sinus blood through the
arachnoid granulations
adult CSF: specific gravity - --Answer --1.003 - 1.008
adult CSF: total cell count - --Answer --normal RBCs (4.7-6.1), less than 5
lymphocytes
adult CSF: total protein - --Answer --15-45 mg/dl (up to 70 mg/dl)
adult CSF: glucose - --Answer --50-75 mg/dl
adult CSF: pressure - --Answer --0-15 mm/hg when supine
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
, adult CSF: average circulatory volume - --Answer --100-150 ml
central sulcus - --Answer --divides the frontal and parietal lobess
lateral sulcus - --Answer --divides the frontal and temporal lobes
longitudinal fissue - --Answer --deep groove that separates the two brain
hemispheres (left and right)
tentorium cerebelli - --Answer --prominent fold in the meningeal layer of the
dural mater
tentorium - --Answer --located between cerebrum and cerebellum and
supports the occipital lobe
supratentorium - --Answer --describes the region above the tentorium
occipital lobe - --Answer --visual processing, visual spatial processing,
motion perception, color discrimination
temporal lobe - --Answer --speech and memory; recognition of auditory
stimuli
cerebellum - --Answer --coordination of voluntary motor movement;
balance and equilibrium; muscle tone
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 4
