1st phase question

Explain Why/How || Brain & Eyeball || Anatomy

(Brain and Eyeball) Explain anatomically/ histologically / Embryologically why or how : Arachnoid matter have different modifications? myelination occurs PNS?Or, myelination occurs in nerve fibers? cerebellum is connected with other parts of brain ? corpus callosum connects two cerebral hemisphere? Anancephaly develops or Failure of closure of anterior neuropore causes…