The complex activities of the body are controlled jointly by the Endocrine and the Nervous systems. As opposed to the Endocrine system the Nervous system has a more or less instant effect on the body via a complex network of nerves and control centres. Axons are long nerve processes which carry nerve impulses from the Soma to other neurons, they vary in length but can become almost as long as half of the human body.
Dendrites are short, thick processes which branch out of the soma in a tree like manor.
They conduct nerve impulses to the soma. These receptors change the information they receive into electrical impulses that are transmitted to other neurons. In sensory neurons the axons are connected to other neurons. Effectors are either glands or a muscle cell that is the receiving end of the nerve impulse. Internuncial Neurons have both the dendrites and the axons are connected to other neurons.