You don't, but glial cells, (oligodendrocytes in the CNS, and Schwann cells in the PNS), wrapped one after another around the axons of neurons with gaps between them called the nodes of Ravnier do create myelinated neurons.
no
Impulses from the sense organs travel to the brain along nerve fibers known as sensory neurons. These neurons carry the signals to the brain, where they are processed and interpreted to create our perceptions and sensations.
No, bundles of neurons are not called electric sparks. Neurons communicate through electrical impulses known as action potentials, but these signals are not referred to as electric sparks. Instead, when groups of neurons fire together, they can create a coordinated electrical activity, which may be described as neural oscillations or brain waves, but not electric sparks.
sensory neurons
Sensory Neurons
Sensory neurons and neurons are connected by Interneurons.
Afferent Neurons
Interneurons or association neurons.
Motor neurons and intern neurons
The neurons form the bodies nervous system.
Interneurons or association neurons are connector neurons that establish connections between other neurons.
Sensory Neurons