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31 Cards in this Set
- Front
- Back
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Hydrocephalus
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Dilation of the cerebral ventricles
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Prosencephalon derivatives
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Telencephalon
Diencephalon |
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Telencephalon derivatives
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Cerebral cortex
Basal ganglia Hippocampus Olfactory bulb Basal forebrain Lateral ventricles |
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Diencephalon derivatives
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Thalamus
Hypothalamus Third ventricle |
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Mesencephalon derivatives
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Midbrain
Cerebral aqueduct |
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Rhobencephalon derviatives
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Metencephalon
Myelencephalon |
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Metencephalon derivatives
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Cerebellum
Pons Fourth ventricle |
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Myelencephalon derivatives
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Medulla
Fourth ventricle |
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What is the ventricular system lined by?
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Ependyma
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4 parts of lateral ventricles
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Anterior (frontal) horn
Body (corpus) Posterior (occipital) horn Inferior (temporal) horn |
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Which ventricle is frequently involved in obstructive hydrocephalus?
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Cerebral aqueduct
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How does the fourth ventricle communicate with the subarachnoid space
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Two foramina of Luschka
Foramen of Megendie |
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ICP of CSF
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65 - 200 mm H2O
5 - 15 mm Hg |
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Production of CSF by
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Choroid plexi (chief site of production)
Ependyma Glial capillary bed Pia/arachnoid capillary bed |
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How much CSF is formed per day?
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600 - 700 ml
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Total volume of CSF in ventricles and subarachnoid space
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140 ml
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What does great anastomotic vein drain into?
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Superior sagittal sinus
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What does small anastomotic vein drain into?
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Transverse sinus
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Superior longitudinal sinus receives blood from
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Cerebral veins
Diploic veins Emissary veins |
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Where does inferior longitudinal (sagittal) sinus receive blood from?
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Veins on the medial surface of the brain
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Where is the cavernous sinus located?
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Lateral to the body of the sphenoid bone
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Cavernous sinus receives blood supply from
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Superficial middle cerebral veins
Superior ophthalmic veins |
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Cavernous sinuses communicate with each other via
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Intercavernous sinuses
Petrosal sinuses Pterygoid plexus of veins |
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Sigmoid sinuses receive blood from
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Inferior cerebrum
Cerebellum Emissary veins |
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Circumventricular organs
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Pineal gland
Subcommissural organ Area postream Median eminence of the third ventricle Neurohypophysis Organum vasculorum Subfornical organ |
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Function of medial gland
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Mediates circadian rhythms via melantonin
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Function of subcommissural organ
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Secrete various glycoproteins into the CSF
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Function of area postrema
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Body fluid homeostasis
Emetic physiology |
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Importance of median eminence of the third ventricle
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Hypophysiotrophic hormones converge before they are conveyed to the pituitary gland
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Function of organum vasculorum of the lamina terminalis
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Fluid and electrolyte balance
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Function of subfornical organ
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Thirst regulation
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