State whether the following statements are true (T) or false (F).
(a) The main component of the white matter of the brain is perikaryon. (T/F)
(b) The arachnoid layer fits closely inside the pia mater (T/F)
(c) A double chain of ganglia, on eon each side of the nerve cord belongs to the spinal cord. (T/F)
(d) Dura mater is the outermost layer of the meninges. (T/F)