In recent years, some taxonomic controversy has occurred over the genus of North American rat snakes. Based on mitochondrial DNA, Utiger et al. (2002) showed that North American rat snakes of the genus Elaphe, along with closely related genera such as Pituophis and Lampropeltis, form a monophyletic group separate from Old World members of the genus.
A pinched nerve is a type of injury or damage to a nerve or a group of nerves. The injury can result from compression, constriction, or stretching. A pinched nerve can lead to other conditions and cause temporary or permanent damage depending on the extent of the injury. pinched nerve is a type of injury or damage to a nerve or a group of nerves. The injury can result from compression, constriction, or stretching. A pinched nerve can lead to other conditions and cause temporary or permanent damage depending on the extent of the injury.
However, if the cause of the low back pain stems from an injured intervertebral disc, stretching can exasperate the injury and cause even more pain. The intervertebral disc provides space between the bony vertebrae and functions as a shock absorbing structure.In some cases, injury to this disc can inflame the exiting spinal nerve root and cause pain, tingling, numbness and weakness, or any combination thereof, down your lower extremity.Patients often refer to this as sciatica.owever, if the cause of the low back pain stems from an injured intervertebral disc, stretching can exasperate the injury and cause even more pain. The intervertebral disc provides space between the bony vertebrae and functions as a shock absorbing structure.