By contrast, postganglionic fibers in the parasympathetic division are cholinergic and use acetylcholine as a neurotransmitter. In the sympathetic nervous system, the postganglionic neurons of sweat glands release acetylcholine for the activation of muscarinic receptors.
The International Space Station (ISS) is made up of multiple materials. Lightweight metals, plastics, and carbon fibers make up the majority of the state. The International Space Station (ISS) is made up of multiple materials. Lightweight metals, plastics, and carbon fibers make up the majority of the state.
Answer Wiki. Well, there are hundreds of materials used throughout the ISS, so I can't talk about them all. The most common material is 2219-T6 aluminum alloy. Most of the ISS structure is aluminum. In fact, the Node modules were each made from single blocks of aluminum. When you look at the outside of the ISS, some of the surface is covered with debris protection blankets made from Nextel and/or Kevlar.