Organisation of the nervous system

what are the white and grey areas of the brain?
White-axon tracs white due to lipids on myelin. grey-contains cell bodies
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What areas make up the hindbrain?
Pons, cerebellum and medulla.
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What is the midbrain?
Acts as a relay station, reflex in visual cortex here.
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What is the fornix tracts?
Relay info from hippocampus to hypothalamus.
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What is the motor cortex for?
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Frontal lobe
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sensory cortex
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parietal lobe
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Occipital lobe
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Temporal lobe
memory and understanding language.
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How many spinal nerves are there?
31, ones before l2 verterbrae where spinal cord ends. others form cauda equina in spinal fluid. last nerve called cogageal nerve
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Explain the ventricle sections of the brain
The chloroid plexus makes CSF. Central canal runs all along spinal cord.
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What are the meningeal layers of the CNS?
Dura marter, archaroid mater and pia mater.
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Dura mater
two layers, to form sinuses with blood eg superior saggital sinus at top of layer closely attached to brain and cranium. in spinal cord hangs losely only attached by foramen magnum the hole in base of skull.
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archroid mater
spiderweb like membrane, forms upper layer of subarachnoid space.
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Pia mater
below saspace fine vascular membrane allows entry of blood vessels to cns. impermeable layer to contain csf.
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Arachnoid granules
CSf in reabsorbed from Sa space to superior sagittal sinus mediated by these granules
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Card 2


What areas make up the hindbrain?


Pons, cerebellum and medulla.

Card 3


What is the midbrain?


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Card 4


What is the fornix tracts?


Preview of the front of card 4

Card 5


What is the motor cortex for?


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