Tech in Surgery Prep / Unit 4 TSC 089 short lesson, about 20 seconds
The Brain and Its Coverings
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The idea
The brain is covered by three connective tissue membranes, the meninges: the dura mater, the arachnoid and the pia mater.
In practice
The dura mater is the tough outer layer against the skull; the pia mater lies on the brain; the arachnoid lies between.
Where people slip
The dura mater also encloses the spinal cord, so the same layers are met in spine surgery.
Your place on the trail
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