Ventricles Flashcards
True or False. There is NO CHOROID PLEXUS in the anterior and posterior horns of lateral ventricles
True
Provides PROTECTIVE cushioning for the brain and NUTRITION
CSF
Largest of the ventricles
Lateral ventricles
Ventricular system is composed of ____ lateral ventricles, third ventricle, fourth ventricle and cerebral aqueduct.
2
Attachment of the plexus to the adjacent brain structures
Tela choroidea
Elevation of the ventricular wall produced by the calcarine fissure
Calcar avis
Long narrow portion of lateral ventricle that extends from interventricular foramen to a point opposite the SPLENIUM of corpus callosum
Body of lat. ventricle
Borders of FORAMEN OF MONRO:
- Anterior nucleus of thalamus
- Septum pellucidum
- Fornix
- Thalamostriate vein
Contains CHOROID PLEXUS
Boundaries of body: A. Floor: Thalamus B. Lateral: BODY of caudate C. Medial: Septum pellucidum D. Roof: corpus callosum E. All are paired correctly
E
Roof: CORPUS CALLOSUM
Medial: posterior part of SEPTUM PELLUCIDUM
Lateral: BODY of caudate
Floor: (medial to lateral)
Fornix
Choroid plexus
THALAMUS
Stria terminalis
Vena terminalis
Caudate nucleus
Continuous fluid-filled system
Ventricular system
Occupies midline of the diencephalon
Third ventricle
Contains abundant tuft of choroid plexus which is continuous with choroid plexus of body and temporal horn.
Atrium/trigone
Passageway between each lateral ventricle and the 3rd ventricle
Foramen of Monro
Fringe-like vascular process of PIA MATER containing capillaries of the choroid arteries
Choroid plexus
Boundaries of third ventricle:
A. Lateral: Bilaterally bordered by THALAMUS and HYPOTHALAMUS
B. Posterior: lamina terminalis, posterior commisure
C. Anterior: lamina terminalis, anterior commisure
B. Posterior: SUPRAPENIAL and PINEAL recesses, posterior commissure
Lateral: bilaterally bordered by THALAMUS and HYPOTHALAMUS
Anterior: LAMINA TERMINALIS, ant. commisure, OPTIC recess
Roof: Tela choroidea - contains choroid plexus and internal cerebral vein
Posterior: SUPRAPINEAL and PINEAL recesses, post. commisure
Communicating system of cavities that are lined with _____________.
Ventricular system; ependyma
Wide area of the body that connects the posterior and inferior horns
Atrium
A large extension of the third ventricle above the EPITHALAMUS
A. Suprapineal recess
B. Infundibular recess
C. Pineal recess
A
Third ventricle has thin membranous roof, ________________, containing choroid plexus
Tela choroidea
T or F. Aqueduct of sylvius is located within the pons.
F. Within the MIDBRAIN
4th ventricle extends under the ________ into the CENTRAL CANAL of MEDULLA
Obex
Narrowest part of the ventricular system with NO CHOROID PLEXUS
Aqueduct of Sylvius
Connects 3rd and 4th ventricles
Aqueduct of Sylvius
Extends into the occipital lobe
Inferior/Temporal horn
These aperture empties into the SUBARACHNOID SPACE at the origins of CN IX and X
FORAMEN OF LUSCHKA
Pyramid shaped cavity bounded ventrally by the pons and medulla
4th ventricle
Boundaries of inferior/temporal horn: A. Roof: Corpus callosum B. Medial: HEAD of the caudate nucleus and HIPPOCAMPUS C. All are paired correctly D. All are not paired correctly
B. Medial: TAIL of caudate nucleus and HIPPOCAMPUS
True or False. 4th ventricle communicates freely with subarachnoid space through two apertures: foramen of MONRO and LUSCHKA
False. Three apertures: (2) MAGENDIE (1) LUSCHKA
Median aperture of MAGENDIE empties into the ___________, anterior extension of the CISTERNA MAGNA
Valleculla
True or False. Choroid plexus of 4th ventricle is attached to the INFERIOR medullary velum and extends laterally to the LATERAL apertures of MONRO
False. Lateral apertures of LUSCHKA
Trace the CSF circulation
Lateral ventricles foramen of Monro Third ventricle Cerebral aqueduct of Sylvius Fourth ventricle foramen of Luschka foramen of Magendie Subarachnoid space Arachnoid villi Superior sagittal sinus
Choroid plexus extends from the _____________ where it joins with plexuses of the third ventricle and opposite lateral ventricle, to the end of inferior horn
Interventricular foramen of Monro
True or False. 4th ventricle has an incomplete roof which is formed by the ANTERIOR and POSTERIOR medullary vela.
True
True or False. Total volume of CSF renewed 4 times in a day
False. Only 3 times a day
Funnel shape downward extension where HYPOPHYSIS is attached.
A. Optic recess
B. Infundibular recess
C. Pinael recess
B
Choroid epithelium has ____________
A. Gap junction
B. Desmosome
C. Tight junction
C
True or False. CSF has lqow cellular and high protein content.
False. Low cellular and protein content
Boundaries of posterior horn:
A. Roof: CORPUS CALLOSUM
B. Medial: CALCAR AVIS
C. All are paired correctly
C
Extensions of the third ventricle between the lamina terminalis and optic chiasm A. Infundibular recess B. suprapineal recess C. Pineal recess D. Optic recess
D
Point at which the 4th ventricle passes up into the cerebellum is called ____________
Apex/Fastigium
The floor of 4th ventricle is also known as _____________
Rhomboid fossa
In front of the interventricular foramen
Anterior/frontal horn
Boundaries of anterior horn: A. Medial: head of nucleus B. Floor: rostrum of corpus callosum C. Lateral: head of caudate nucleus D. Roof and anterior border: corpus callosum
A. Medial: SEPTUM PELLUCIDUM, fornix and genu of corpus callosum
Lateral: HEAD of caudate
Floor: ROSTRUM of corpus callosum
Boundaries of FOURTH VENTRICLE
A. Roof: inferior cerebellar vela
B. Floor: pons and medulla
C. Lateral: 3 cerebellar peduncles
A. Roof: SUPERIOR and INFERIOR medullary vela, SUPERIOR cerebellar peduncle
Floor: pons and medulla
Lateral: 3 cerebellar peduncles
