Dura mater. Dura mater, or dura, is a thin membrane that is the outermost of the three layers of the meninges that surround the brain and spinal cord. It is derived from mesoderm. The other two meningeal layers are the pia mater and the arachnoid mater.ura mater. Dura mater, or dura, is a thin membrane that is the outermost of the three layers of the meninges that surround the brain and spinal cord. It is derived from mesoderm. The other two meningeal layers are the pia mater and the arachnoid mater.
The story with the most credibility is the one that, the PiÃ±a Colada was introduced on August 15, 1954 at the Caribe Hiltonâs Beachcomber Bar in San Juan, Puerto Rico by its alleged creator, Ramon âMonchitoâ Marrero.
The pina piÃ±a colada is a, sweet-rum based cocktail made with, rum cream of, coconut and pineapple, juice usually served either blended or shaken with. iceina piÃ±a. Colada the pina piÃ±a colada is, a-sweet rum based cocktail made, with rum cream, of coconut and, pineapple juice usually served either blended or shaken. With ice it may be garnished with a, pineapple wedge a maraschino cherry. Or both the pina piÃ±a colada has been the Official Beverage of puerto. rico since 1978