Week 1 Flashcards
Dome like rood of skullcap =
Calvaria
Cranial base is the…
Basicranium
3 sutures, internal surface of calvarium
Coronal
Sagittal
Lamboidal
T/F cranial sutures obliterate with age
True
Frontal crest attaches to___
Falx cerebri
Sagittal groove deepens posteriorly to accommodate ___ which helps to ____ fluid
Sagittal sinus
Drain
Venous lacuna accommodate ___ from arachnoid granulations
Drainage of CSF
Fossa=
Depression
Granular lacunae on either side of midline accommodate ___ (drainage of ___ from arachnoid granulations) and become ___ and ___ with age
Venous lacunae
CSF
Larger
Deeper
Intracranial surface is grooved for ___ vessels
Middle meningeal vessels
Blows to head can result in Fx or tear periosteum, can produce rapid intracranial hemorrhage…AKA ____ . Is this dangerous?
Epidural hematoma
YES! It is dangerous
Internal occipital crest is below ___ of sinuses and provided attachment for ___
Confluence
Falx cerebelli
Basicranium is divided into 3 parts:
Anterior cranial fossa
Middle cranial fossa
Posterior cranial fossa
Anterior cranial fossa accommodates ___of brain
Frontal lobes
Middle cranial fossa container ___ and ___
2 temporal lobes
Diencephalon
Posterior cranial fossa accomadates ___ lobes ,___, and ___
Occipital
Brain stem
Cerebellum
Attachment point for falx cerebri is
Frontal crest
Formanen cecum = ______ vein passed through
Blind opening
Emissary
T/F Orbital plates are part of frontal bone
True
Ethmoid contains which nerves
Olfactory
Foramen cecum contains which vein
Emissary
Optic canal contains which nerve, artery, and vein
CN II
Opthalmic artery
Central vein of retina
Foramen rotundum houses which nerve
CN V2
Superior orbital fissure houses which nerves and which vein?
CN II
CN IV
CN V1
CN VI
Superior opthalmic vein
Foramen ovale houses which nerve
CN V3
Foramen spinosum hold what artery
Middle meninges
Foramen lacerum contains which artery and nerve
Carotid artery
Great superficial petrosal nerve
Internal auditory meats houses which nerves
CN VII
CN VIII
Jugular foramen houses which nerves and vein
CN IX
CN X
CN XI
Internal jugular vein
Hypoglossal canal houses what nerve
CN XII
Posterior condular canal house which vein
Emissary vein
CSF contains approx ___ % of plasma glucose levels
66%, or 2/3
3 functions of CSF____ and ___ CNS against concussive injury Transports ___ and hormone releasing factorsRemoves ___ through absorbtion
Supports and cushions
Hormones
Metabolic
CSF is produced by ___ and the entire volume is turned over ___ times per day
Choroid plexus
3-4
There are ___ ventricles
Each are lined with ___ and contain CSF
4
Ependyma
Ventricles contain ___ which produces CSF at rate of 500 ml/day
Choroid plexus
Ventricles communicate with subarachnoid space via ___ in the ___ ventricle
3 foramina
4th ventricle
There are ___ lateral ventricles located in cerebral hemispheres
2
2 lateral ventricles communicate with 3rd ventricle via ___
Interventricular forimina
The interventricular foramina which communicates lateral ventricles with 3rd vertical is also know as
Interventricular foramina of MONRO
Lateral ventricles consist of 5 parts:
Frontal (anterior) ______ of lateral ventricle
___ horn of lateral ventricle
___ horn of lateral ventricle
____ (antrum) of lateral ventricle
Frontal horn of lateral ventricle
BodyTemporal (inferior) horn
Occipital (posterior) horn
Trigone
Frontal horn of lateral ventricle is formed by head of ___
Caudate nucleus
Head of caudate nucleus (___ horn) can be affected by ___
Frontal horn
Huntington’s disease
The body of lateral ventricle communicates with 3rd ventricle via ___
Interventricular foramina of Monro
Temporal horn of lateral ventricle has a ___ plexus
Choroid
Occipital horn of lateral ventricle lacks ___plexus
Choroid
Trigone of lateral ventricle produces most of ___ and contains ___ which can be calcified in adults and visible on X-ray
CSF
Glomus
3rd ventricle is located in the ___
Diencephalon
3rd ventricle communicated with lateral ventricles via ___ and communicates with 4th ventricle via___
Interventricular foramina of Monro
Cerebral aqueduct
The cerebral aqueduct (of ___) is the weakest and is located in ___
Sylvius
Midbrain
Cerebral aqueduct connects ___ and ___ ventricles
3rd
4th
Cerebral aqueduct of Sylvius lacks ___ plexus
Choroid
Blockage of cerebral aqueduct of Sylvius leaders to
Hydrocephalus
4th ventricle Lise’s between ___ and brainstem
Cerebellum
4th ventricle contains a pair of __ plexuses in its ___ roof
Choroid
Caudal
CSF flows from the 4th ventricle into the subarachnoid space via 2 lateral forimina of ____ and a single medial foramen of
Lushka
Magendie
Circulation of CSF from lateral ventricles via interventricular foramina of ___ to ___ ventricle
Monro
3rd
Circulation of CSF from 3rd ventricle via ___ aqueduct to the __ ventricle
Cerebral
4th
Circulation of CSFFrom the 4th ventricle to central canal of spinal cord OR___ space via 2 ___ and 1 ___ apertatures
Subarachnoid
Lateral
Medial
Circulation of CSF from subarachnoid space to superior ___ sinus it enters ___ circulation with help of ___ villi
Sagittal
Venous
Arachnoid
Cerebellomedullary cistern (aka Cisterna ___) Is the largest and located behind ___ and below ___
Manga
Medula
Cerebellum
____ cistern is located in front of Pons
Pontine
Cisterna interpuducularis is located between cerebellum and ___
Midbrain
Interpeduncular cistern is located between ____ and midbrain
Cerebellum
Superior cistern=
Quadrigeminal cistern
OR Cistern of the great cerebral vein
Ambient cistern (AKA Cisterna ___) are thin sheet-like extension of the ___ cistern that extend ___ through the midbrain. Connects with ___ cistern
Ambiens
Superior
Laterally
Interpeduncular
One way bulk flow of of CSF from arachnoid space to venous system happens via ___ through giant ___
Endocytosis
Vacuoles
Lumbar puncture occurs between ___ lumbar vertebra
3rd and 4th
Hydrocephalus is the dilation of cerebral ventricles caused by blockage of ___ pathways.Characterized by excessive ___ of CSF in ____ ventricles or subarachnoid space
CSF
Accumulation
Cerebral
Circumventricular organs are ___ zones that monitor concentrations of hormones/ chemicals in blood & CSF
Chemosensitive
Circumventricular organs (ARE/ ARE NOT) highly vascularized. Have ___ blood capillaries(DO/ DO NOT) have blood-brain barrier
ARE highly vascularized
Fenestrated
DO NOT have a blood-brain barrier
Circumventricular organs are usually part of the ___ located in the periphery of of the 3rd ventricle.
Diencephalon
Area postema is a circumventricular organ is located on either side of ___ ventricle rostral to the ___
4th
Obex
Area postrema triggers ___ in response to circulating ___ substances. Regulation of ___ intake and ____ system
Vomiting
Emetic
Food
Cardiovascular
Longitudinal fissures separates the ___ hemispheres
Cerebral
Transverse fissure separates ___ and ___
Cerebrum
Cerebellum
Longtitudinal fissure separates ___ hemispheres
Cerebral
Transverse fissure separates ___ hemispheres from___
Cerebral
Cerebellum
Most important layer of the neocortex is the ___ granular (#___) which form the stripe of ___
Internal
IV
Stripe of Gentry