When one plate is composed of oceanic lithosphere and the other is composed of continental lithosphere, the denser oceanic plate is subducted, often forming an orogenic belt and associated mountain range. This type of convergent boundary is similar to the Andes or the Cascade Range in North America.hen one plate is composed of oceanic lithosphere and the other is composed of continental lithosphere, the denser oceanic plate is subducted, often forming an orogenic belt and associated mountain range. This type of convergent boundary is similar to the Andes or the Cascade Range in North America.
Myelinating Schwann cells wrap around axons of motor and sensory neurons to form the myelin sheath. The Schwann cell promoter is present in the downstream region of the human dystrophin gene that gives shortened transcript that are again synthesized in a tissue specific manner.
This sheath is called the myelin sheath and is made up of Schwann cells in the peripheral nerves and oligodendrocytes in the central nervous system nerves. This insulation can be damaged by compression just as the nerve membrane itself can be injured.he central nervous system nerves are supported by âassistant cellsâ called oligodendrocytes and the peripheral nervous system nerves are support byâ assistant cellsâ called Schwann cells. There are marked differences between the two types of nerves.