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The Nervous System - Coggle Diagram

- - - - Functionally neurons are grouped according to the direction the nerve impulse travels relative to the CNS.
        
        Neurons carrying impulses from sensory receptors(in the internal organs or the skin) to the CNS are sensory neurons or afferent neurons. The cell bodies of sensory neurons are always found in a ganglion outside the CNS. Sensory neurons keep us informed about what is happening both inside and outside the body.
        The dendrite ending of the sensory neurons are usually associated with specialised receptors that are activated by specific changes occurring nearby. The simpler types of sensory receptors in the skin are cutaneous sense organs, and those in the muscles and tendons are proprioceptors. The pain receptors are the least specialised of the cutaneous receptors.
        The proprioceptors detect the amount of stretch or tension in skeletal muscles, their tendons and joints.
        Neurons carrying impulses from the CNS to the viscera and or muscles and glands are motor neurons or efferent neurons. The cell bodies of motor neurons are usually located in the CNS.
        The third category of neurons consists of the interneurons or association neurons. They connect the motor and sensory neurons in neural pathways. Their cell bodies are typically located in the CNS.
    - - The structural classification of neurons is based on the number of processes including both dendrites and axons, extending from the cell body