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.
In the peripheral nervous system , Schwann cells form a myellin sheath around axons , and in the central nervous system , Oligodendrocâ¦ytes do the same thing for the neurons there ; and Astrocytes ( Astroglia ) surround brain neurons to hold them in place , provide nutrients and oxygen to them , insulate neurons from one another , destroy pathogens ...