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Sensory neurons (afferent neurons) are unipolar, bipolar, or multipolar shaped cells that conduct action potentials toward or into the central nervous system. They carry somatic nervous system signals from the skin, joints, skeletal muscles, sensory organs (eyes, ears, mouth, and nose). They also carry autonomic nerous system signals from the visceral organs (heart, lungs, vessels, etc).
Sensory neurons have long dendrites and short axons. The dendrites of a sensory neuron are found outside the spinal cord in the skin, muscle or gland of their particular sensory receptor. Their axons end in the spinal cord where they connect with the dendrites of other neurons. 2. Motor neurons send impulses from the CNS to the muscle, organ or gland they command to take action. Motor neurons have short dendrites and long axons. Their dendrites and cell body are in the spinal cord and their axons are found in the muscle, organ or gland that they innervate. They can be over one metre long. 3.