GENERAL HISTOLOGY

Detailed explanation-1: -In transverse sections, the gray matter is conventionally divided into dorsal (posterior) lateral and ventral (anterior) “horns.” The neurons of the dorsal horns receive sensory information that enters the spinal cord via the dorsal roots of the spinal nerves.

Detailed explanation-2: -The dorsal horn is found at all spinal cord levels and is comprised of sensory nuclei that receive and process incoming somatosensory information. From there, ascending projections emerge to transmit the sensory information to the midbrain and diencephalon.

Detailed explanation-3: -The dorsal root is sensory and the ventral root motor; the first cervical nerve may lack the dorsal root. Oval swellings, the spinal ganglia, characterize the dorsal roots. They are formed of nerve cells that give rise to the sensory nerve fibres.

Detailed explanation-4: -The dorsal root transmits sensory information, forming the afferent sensory root of a spinal nerve.

Detailed explanation-5: -Dorsal root ganglia contain a complex array of sensory neuron cell bodies that have different functions and innervate different targets.