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.
Nerve damage and the nerve pain and symptoms associated can occur when your nerve is pinched or entrapped. Your pinched nerve usually occurs as a result of injury to structures adjacent to the nerve. The best known pinched nerve would be the sciatic nerve.erves can be pinched anywhere in your body. The second most common nerves that can be pinched are your neck nerves. Pinching your neck nerve can result in arm pain, weakness and altered reflexes.