PSYCH261 Chapter Notes - Chapter 3: Subventricular Zone, Radial Glial Cell, Auditory Cortex
23 Jan 2017
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Meninges: connective tissue layer that surrounds the cns. Dura matter: super cial layer that surrounds the spinal chord, split into 2 layers, found on top of the subdural space. Subdural space: found between dural layer and arachnoid layer, location of subdural hemorrhage. Arachnoid matter: lies deep to the dura matter, spidery arachnoid processed come off the arachnoid membrane. Subarachnoid space: below the arachnoid matter, contains blood vessels. Pia matter: innermost layer, follows the bumps and grooves of the brain. Ventricles are lled with csf, with bathes and cushions the cns. Cerebral aqueduct: long tube that connects the 3rd ventricle to the 4th. Choroid plexus: in the lateral ventricles manufacture csf (lots is made everyday) Arachnoid granulations: structure where csf is reabsorbed into the bloodstream. Hydrocephalus: obstruction blocks the ow of csf and increases pressure within the ventricles. Cns develops from the neural tube, which closes by the 28th day of development. Forebrain: develops into the lateral and 3rd ventricles.
