मायलीन शीथ (Myelin sheath) एक सुरक्षात्मक आवरण है जो किसे ढकता है?

Which type of neuron has a single process that divides into two branches, one acting as an axon and the other as a dendrite, commonly found in sensory pathways?

Which part of the nervous system is colloquially referred to as 'the brain in the gut'?