Ependymal cells ________. Naim 23:46 Fundamental of the Nervous System and Nervous Tissue Ependymal cells ________. A) are a type of neuron B) are a type of macrophage C) are the most numerous of the neuroglia D) help to circulate the cerebrospinal fluid Answer: D) help to circulate the cerebrospinal fluid Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+