[Innervation of the brain: what is innervated by what].

In the pia mater, brain substance and ependyma, peripheral nerves with sensory and effector axons and two types of neurons are located: (1) afferent pseudounipolar and bipolar cells and (2) efferent vegetative Dogiel type I neurons. Together, these nerves and neurons form the intramedullary part of the autonomous nervous system, innervating blood vessels, ependyma and perivascular connective tissue.