Arnolds canals nerve refers to the anatomical term for the lesser occipital nerve. This nerve, originating from the second and third cervical nerves, travels from the neck towards the scalp, providing sensory innervation to the skin in that area. Synonyms for Arnolds canals nerve include lesser occipital nerve and second and third cervical nerve. Its main function is to transmit sensory signals, enabling us to perceive touch, temperature, and pain in the back of the head and neck region. Understanding the synonyms for this nerve allows medical professionals to accurately communicate about its location and function during clinical examinations and treatments.