EVERYDAY SCIENCE

Detailed explanation-1: -Information from the skin, skeletal muscle and joints is relayed to the spinal cord by sensory cells located in the dorsal root ganglia.

Detailed explanation-2: -The dorsal root of spinal nerve (or posterior root of spinal nerve or sensory root) 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.

Detailed explanation-3: -ventral roots (anterior roots) allow motor neurons to exit the spinal cord. dorsal roots (posterior roots) allow sensory neurons to enter the spinal cord.

Detailed explanation-4: -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-5: -Sensory information is carried by sensory neurons in dorsal roots, which enter the cord in small bundles called dorsal rootlets. The cell bodies for these sensory neurons are clustered together in a structure called the dorsal root ganglion, which is found alongside the spinal cord.