Which of the following provide a protective scaffolding for the neurons, control blood flow in the brain, promote new connections among nerve cells and release chemicals for healing?

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Glial cells, also known as neuroglia, provide a protective scaffolding for the neurons of the brain and spinal cord. They also control blood flow in the brain and promote new connections among nerve cells. In addition, some types of glial cells release chemicals that can aid in healing and repair following injury or disease. Synaptic cells are not a recognized cell type, Nodes of Ranvier are gaps in the myelin sheath of an axon, and axons are the long, thin extensions of neurons that transmit signals to other cells.

Which of the Following Provide a Protective Scaffolding for the Neurons