Respuesta :
Anesthetic blocks the function of the dorsal rami of the cervical spinal nerves, skin, and muscles of the back of the neck and the shoulders areas of the body will be majorly affected.
31 pairs of spinal nerves in the human body are present. Both a ventral root and a dorsal root are the places from which all spinal nerves emerge. Each root is made up of a large number of dorsal and ventral root filaments or rootlets. Almost all spinal nerves divide into a large ventral ramus and a smaller dorsal ramus. After leaving the intervertebral foramina, the lumbar dorsal rami separate into medial and lateral branches, having their origin from the spinal nerves perpendicularly. The medial and lateral branches, respectively, supply the multifidi and erector spinal muscles.
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