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Neurons â¢ Neurons âcells that transmit nerve impulsesâ¢3 Types of Neurons âSensory neurons carry impulses from sense organs to the spinal cord and brainâMotor neurons carry impulses from the brain and spinal cord to muscles and glandsâInterneurons connect sensory and motor neurons and carry impulses between them.eurons â¢ Neurons âcells that transmit nerve impulsesâ¢3 Types of Neurons âSensory neurons carry impulses from sense organs to the spinal cord and brainâMotor neurons carry impulses from the brain and spinal cord to muscles and glandsâInterneurons connect sensory and motor neurons and carry impulses between them.
The dorsal root of spinal nerve (or posterior root of spinal nerve) is one of two roots which emerge from the spinal cord. It emerges directly from the spinal cord, and travels to the dorsal root ganglion.Nerve fibres with the ventral root then combine to form a spinal nerve.he root emerges from the posterior part of the spinal cord and travel to the dorsal root ganglion. This contains the cell bodies of the nerve fibres contained in the root. The lateral division of the dorsal root contains lightly myelinated and unmyelinated fibres of small diameter.