Term
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Definition
| broad term given to a group of anomalies where there are malformations in the dorsum of the embryo |
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Term
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Definition
| complete lack of brain development |
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Term
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Definition
| defect in cranium and eversion of brain and meninges |
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Term
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Definition
| failure for spine to properly develop |
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Term
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Definition
| defect in the forebrain development |
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Term
| Neural Migration Disorders |
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Definition
Agyria/ lissencephaly – lack of gyri
Pachygyria
polymicrogyria |
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Term
| Major Production sites of CSF |
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Definition
| choroid plexus of lateral, third and fourth ventricles |
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Term
| Three layers of CT surrounding CNS |
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Definition
Dura Mater
Arachnoid membrane
Pia Mater |
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Term
| Contents of subarachnoid space |
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Definition
| CSF, blood vessels, spinal nerve roots and arachnoid trabeculations |
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Term
| Driving force for CSF circ |
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Definition
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Term
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Definition
| supplies: rostral, middle, caudal cerebral arteries and rostral cerebellar arteries |
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Term
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Definition
| supplies: caudal cerebellar arteries |
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Term
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Definition
marvellous network
suspected function: thermoregulation |
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Term
Arterial Blood Supply to Brain
Dog |
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Definition
| Vertebral blood reaches cerebellum and cerebrum |
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Term
Arterial Blood Supply to Brain
Sheep and Cat |
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Definition
Little or no vertebral blood reaches the brain
maxillary a.: sole input to the brain |
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Term
Arterial Blood Supply to Brain
Ox |
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Definition
| Vertebral blood reaches all parts of the brain |
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Term
| Captive bolt and electrical stunning technique |
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Definition
| Disrupt brain function completely within a fraction of one second |
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Term
| Jewish & Islamic ritual slaughter technique |
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Definition
Single rapid cut of the neck with an extremely sharp knife, Severing the common carotid arteries and jugular veins
But leaves the vertebral arterial supply to the brain intact (bony protection by transverse foramina) |
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Term
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Definition
Drains the dorsal areas of the forebrain (dorsal cerebral veins)
Drains the deep dorsal parts of the forebrain (great cerebral vein) |
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Term
| Ventral System of Sinuses |
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Definition
Drains the ventral areas of the forebrain (ventral cerebral veins)
Drains face, nasal cavity, orbit, upper teeth |
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Term
| Connecting system of Sinuses |
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Definition
(Paired) connecting sinus (or Sigmoid sinus)
Receives the dorsal system (via transverse sinus) and the ventral system (via petrosal sinuses) and connects directly with the spinal sinus system
Drains mainly via the connecting sinus (Sigmoid sinus) into the maxillary vein into the systemic circulation |
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Term
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Definition
| Barrier between the plasma (blood) and the interstitial spaces (brain) |
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Term
| Drug Transport through BBB |
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Definition
Simple diffusion if drug is small, unbound & lipophil
Concentration gradient for less lipophylic drugs
Less likely carrier-mediated transport |
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