Anatomy of Head continued  Meninges dura mater - outermost layer; connective tissue bleeding between dura & skull are epidural bleeds bleeding between dura & arachnoid space are subdural bleeds arachnoid membrane - suspends brain in cranial cavity; arachnoid space under membrane filled with cerebrospinal fluid (CSF) CSF provides cushioning & nutrients to brain bleeding under this area are subarachnoid bleeds pia mater - delicate tissue covering brain and spinal cord; highly vascular
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