基底神经节( ). A: the basal microglia B: the basal ganglia C: the oligodendrocyte D: the glial cells

Which of the following is NOT a glial cell? A: Astrocyte B: Oligodendrocyte C: Schwann cell D: Ganglion

Glial cells are unimportant structural elements of the spinal cord that do nothing more than hold all the important things together, like the nerves.

Which is wrong about the transcellular signaling of NO or CO? A: NO can penetrate endothelial cells and induces smooth muscle extension B: CO can affect presynaptic neurons, adjacent neurons, or glial cells C: both of them can stimulate cGMP synthesis D: both of them have receptors on the target cell membrane