It is one of the oldest and broadest of the engineering disciplines. The mechanical engineering field requires an understanding of core areas including mechanics, kinematics, thermodynamics, materials science, structural analysis, and electricity.
Dura mater. Dura mater (UK /ËdjÊÉrÉ ËmeÉªtÉr/ or US /ËdÊÉrÉ ËmÃ¦tr/), or dura, is a thick 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 arachnoid mater and the pia mater.
The dura mater is a sac that envelops the arachnoid mater and surrounds and supports the large scrams channels (dural sinuses) carrying blood from the brain toward the heart. The dura has four areas of infolding: 1  Falx cerebri, the largest, sickle-shaped; separates the cerebral hemispheres.