Nerve cells or neurons light micrograph Neurons are responsible for passing information around the central nervous system CNS and from the CNS to the rest of the body Each nerve cell comprises a body surrounded by numerous extensions called dendrites Dendrites collect information from other nerve cells or from sensory cells Each neuron also has one process called an axon which passes information to other nerve cells or to effector cells such as muscle fibres Magnification x when printed at centimetres wide