Hagfish, Lobsters and Crabs. As well as Mantis Shrimp.
Animals capable of empathy possess mirror neurons, like humans.
The brain has two kinds of cells, neurons and glial cells. So if the brain did not have neurons it could still have glial cells, but they have no function in the absence of neurons. You would, in effect, have converted the brain into a tumor. Human beings cannot live without a brain. (Nor any irrational animals) We wouldn't be animals, we would be stupid zombies.
Striped muscular cells with sacromeres and motor neurons.
Yes, there are mitochondria in nerve cells. Mitochondria provide energy to the parts of the cell that need it most. Nerve cells mostly only differ from other cells because their specialized structures, including the dendrites, axon, myelin sheath and presynaptic terminal.
sensory neurons
Sensory Neurons
Sensory neurons and neurons are connected by Interneurons.
Interneurons or association neurons.
Motor neurons and intern neurons
The neurons form the bodies nervous system.
Sensory Neurons
Afferent Neurons